A term used on tumblr and other sites usually posted in conjunction with a picture of attractive people/persons maintainer of
said site would have no qualms fucking
Person 1: I’m going to post a picture of some cute hipster chick on tumblr! what should I tag it as?
Person 2: why not use unfff?
unfff: define #2
Scientifically proven sound a man makes when kicked in the testes.
Captain Falcon: FALCON… PUUUUNCH AT BALLS
Innocent bystander: OH SHI–UNFFF.