Se me derramó el café sobre el teclado.

Se me is a very common Spanish pattern used when something happens to someone, often unintentionally.

In Se me derramó el café, the idea is:

• se = part of the construction
• me = to me / on me
• derramó = spilled

So the sentence does not sound like I deliberately spilled the coffee. It sounds more like:

• The coffee spilled on me
• I accidentally spilled the coffee
• My coffee got spilled

This structure often makes the event sound accidental or unfortunate.

This is the so-called accidental se construction.

Spanish often uses it when:

• something happens by accident
• the speaker wants to focus less on personal responsibility
• the event is presented as something that happened, rather than something someone intentionally did

So:

• Derramé el café = I spilled the coffee
  This sounds more direct and neutral.
• Se me derramó el café = I spilled the coffee by accident / The coffee spilled on me
  This sounds more accidental.

The se here does not mean himself/herself/itself in the normal reflexive sense. It is part of this special pattern.

Me is an indirect object pronoun. It shows who was affected by the event.

Here it means:

• to me
• on me
• affecting me

So Se me derramó el café literally works something like:

• The coffee spilled itself on me

That sounds odd in English, but it helps show the Spanish structure.

You could change me to other pronouns:

• Se te derramó el café = You spilled the coffee
• Se le derramó el café = He/She spilled the coffee
• Se nos derramó el café = We spilled the coffee

Because the subject is el café, which is singular.

In this sentence, the thing doing the grammatical action is the coffee, not I.

So:

• el café = singular
• therefore derramó = singular

That is why it is derramó, not derramé.

Compare:

• Se me derramó el café = The coffee spilled on me
• Se me derramaron los cafés = The coffees spilled on me

The verb agrees with whatever was spilled.

Yes. That is perfectly grammatical.

But it has a different feel:

• Derramé el café sobre el teclado = I spilled the coffee onto the keyboard
• Se me derramó el café sobre el teclado = I accidentally spilled the coffee onto the keyboard

The second version sounds more natural if you want to show it was unintentional or unfortunate.

So the difference is mostly about point of view and tone, not basic meaning.

Sobre here means onto / on / over.

In this sentence, it indicates where the coffee ended up: on the keyboard.

You may also hear en el teclado in some contexts, but sobre el teclado strongly suggests the coffee went onto the surface of the keyboard.

So:

• sobre el teclado = on top of the keyboard / onto the keyboard
• en el teclado = in/on the keyboard, depending on context

For a spill, sobre sounds very natural.

Derramó is the preterite, which is used for a completed event.

A spill is usually seen as:

• a single event
• completed
• happening at a specific moment

So se me derramó means it spilled or it got spilled at a certain point.

If you used derramaba, it would usually sound incomplete or descriptive, as if you were setting a scene or describing an ongoing action, which is less natural here.

So for Oops, I spilled the coffee, the preterite is the normal choice.

Not in the usual sense.

Normally, a reflexive verb means the subject does something to itself, like:

• lavarse = to wash oneself

But in se me derramó, the se is part of the accidental/unintentional construction, not a normal reflexive meaning.

So it is better to think of this as a special pattern:

• se + indirect object pronoun + verb

rather than trying to interpret se literally as itself.

Yes, Spanish allows some flexibility.

The most neutral order is:

• Se me derramó el café sobre el teclado.

But you could also hear:

• El café se me derramó sobre el teclado.
• Sobre el teclado se me derramó el café.

These versions may shift emphasis:

• starting with el café highlights the coffee
• starting with sobre el teclado highlights the location, maybe because that is the important or shocking part

Still, the original order is very natural.

Good question. They are related, but not the same.

• derramarse = to spill
• caerse = to fall

So:

• Se me derramó el café = the coffee spilled
• Se me cayó el café can mean the coffee fell, or that you dropped it, depending on context

If the liquid came out of the cup and spread, derramarse is more precise.

If the cup itself fell, Spanish might use:

• Se me cayó el café
  or more specifically:
• Se me cayó la taza de café

Usually, yes, especially in this sentence.

Teclado can mean any keyboard, but with coffee spilling on it, people will normally imagine a computer keyboard.

If needed, context can make it clearer:

• el teclado del ordenador = the computer keyboard
• el teclado del piano = the piano keyboard

In Spain, ordenador is the usual word for computer, so if you wanted to be extra specific in Peninsular Spanish, that would be the natural choice.

Yes, very natural.

Native speakers commonly use this kind of structure for accidents:

• Se me perdió el móvil = I lost my phone
• Se me olvidaron las llaves = I forgot the keys
• Se me rompió la pantalla = My screen broke
• Se me derramó el café = I spilled the coffee

It is a very useful everyday pattern, especially when talking about mistakes, accidents, or annoying things that happened.