Tali pinggang ini terlalu ketat pada pinggang saya selepas makan tengah hari.

Malay often leaves out the verb to be when the predicate is an adjective.

So:

Tali pinggang ini terlalu ketat
literally looks like
Belt this too tight

but it naturally means:

This belt is too tight

You do not need a separate word for is here.

Malay does not normally use articles like a, an, or the.

So tali pinggang can mean:

• a belt
• the belt
• just belt

The exact meaning depends on context.

In this sentence, ini makes it specific, so tali pinggang ini means this belt.

In Malay, demonstratives such as ini and itu usually come after the noun.

So:

• tali pinggang ini = this belt
• rumah itu = that house

This is normal Malay word order.

Tali pinggang is the normal Malay word for belt.

It is a compound expression:

• tali = cord, strap, rope
• pinggang = waist

But learners should treat tali pinggang as one vocabulary item meaning belt, rather than translating it word by word every time.

This is an important difference:

• terlalu ketat = too tight, tighter than is comfortable or acceptable
• sangat ketat = very tight, but not necessarily a problem

So in this sentence, terlalu shows that the tightness is excessive.

Yes, di pinggang saya is also possible.

In this sentence, pada pinggang saya means something like:

• at my waist
• on my waist
• in natural English, often around my waist

A rough difference is:

• pada can sound a bit more about where something affects or applies
• di is more directly locational

In everyday speech, both may be heard in similar contexts. The important point is that the phrase tells you where the belt feels too tight.

Malay usually expresses possession with the pattern:

noun + possessor

So:

• pinggang saya = my waist
• rumah saya = my house
• kereta Ali = Ali's car

This is the normal structure. English puts the possessor first, but Malay usually puts it after the noun.

Because the two instances are doing different jobs:

• tali pinggang = belt
• pinggang saya = my waist

Even though the same word appears twice, this is perfectly natural in Malay. The first pinggang is part of the fixed noun tali pinggang, and the second is the actual body part being referred to.

If the context is already clear, a speaker might shorten the sentence and omit pada pinggang saya, but the full version is not wrong.

Selepas means after.

Makan tengah hari is the normal expression for lunch. Literally, it comes from words meaning eat and midday, but as a whole it often functions like a noun expression meaning lunch.

So:

• selepas makan tengah hari = after lunch

Malay often uses meal expressions this way:

• makan pagi = breakfast
• makan tengah hari = lunch
• makan malam = dinner

You could say:

Tali pinggang ini terlalu ketat pada pinggang saya selepas saya makan tengah hari.

That more explicitly means:

This belt is too tight on my waist after I eat / after I have lunch.

The original sentence already strongly suggests that the speaker means after lunch, but adding saya after selepas makes the subject fully explicit.

Yes. Malay is quite flexible with time expressions.

For example:

Selepas makan tengah hari, tali pinggang ini terlalu ketat pada pinggang saya.

This means the same thing. In fact, putting the time phrase first can sound very natural because it sets the scene first:

After lunch, this belt is too tight on my waist.