An acronym for Yeah It's Late, Fuck You! Used predominantly by viewers who give donations late during a livestream, well after the topic of discussion or activity has changed to something else.
XTwitchUserX had already moved on to talking about puppies, but Chad joined late and was still watching the football segment. Chad knew he was an hour behind the live feed, but gave zero fucks so he sent a $50 dono that read out loud "Patriots Forever! YILFY!"
by SmuttySmurfette December 09, 2020