If you had Ant Man's powers...

Buy a single diamond, gold coin other precious stones & metals, gigantise them then I would cut up or melt down each one and sell off the pieces making myself rich, then I would blow my money on hookers and cocaine or you know video games whatever.

If you meant I can only shrink myself however then meh id sneak into movies for free, also id play pranks on people, my town would think it's haunted all of a sudden, I wuldnt do anything perverted though, well probably not, ok maybe once or twice...a week maybe but that's it I swear...

I couldn't think of 1 decent, practical thing I could do in real life with Antman's powers. None that are profitable anyway. Antman's powers seem to be geared towards underhanded/indecent applications.

A lot of perving in women’s change rooms, like everyone else.

Ah, this one I can see myself doing.