OMG! Translate it please!

i wonder what this says

not that hard to figure out, but there must be some silly dialogue in there too

I must know what they're talking about!

The letter on the right says something like "Oppai meido for one day"

interesting

Oh--

I kept trying to figure out why he'd circled that "i" twice, and what that writing was below it but between the circles.

Ah ha ha. Silly me. That's not writing at all.

This is adorable.