Is my partner immature?

You probably farted during orgasm.

Giggled that can be viewed as immature indeed. I would've smiled or grinned. But you had a big orgasm. So my question is why read into his response so much? He hit the spot. Be happy with that. Many men don't and don't even care whether they do or not.

I think it would depend on the partner and his personality :) The important thing is if you both enjoyed each other's company!

Probably immaturity, but could be personality. Really not a 'nice' thing to do during sex unless you just don't care how it makes the other person feel.

It's funny sometimes because we don't normally yell out, shake, and scream, "A PAPI! A QUE DIO!"

probably had some funny contorted orgasm face. LOL

Sometimes we make the funny cum face to.

He was probably checking out memes on his phone.

Hes probably impressed

sounds like positive feedback.

It sounds like fun times.

I envy you!

it's ok. enjoy yourself!

He is pleased.

You might have made a 😫 or 😖 and he thought it was funny. We all make some weird face when we orgasm.