p.u.s.f.
It’s when your brain is full of junk food and sexual thoughts and you can’t focus on anything.
I failed my math test because I was too P. U. S. F. to pay attention.
She said she was P. U. S. F. after watching a movie with a hot guy.
He was P. U. S. F. and texted me a picture of a pizza and said it was ‘sex food’.