to bo taki kouc

When a geek says he didn't study, but he obviously did. They often say that just to impress other schoolmates with their high grades.

A: That exam went really well!
B: I didn't study yesterday. To bo taki kouc!
A: Shut up, you nerd!!

pomotoma

It means someone did something (usually very dirty) on purpose.

He did this pomotoma! He is such a dick!