Suddenly a sabertooth tiger

((Inspired by this pic: https://static1.e621.net/data/ae/9c/ae9c39629b486743c8ee6eeacea182b1.png ))

A bunch of jocks get shit-faced drunk one night. One of them is browsing the web and comes upon the thread. Tells them that this looks real.  One of them scoffs and says it sounds like bullshit. First jock says if it's such bullshit, why doesn't he (the smug guy) take the role of the girl. Everyone else agrees, being really curious to see if it will work.  It does, and smug jock is soon a curvacious sabertooth girl.

The shock lasts for a good while, before the guys start hooting and hollering, generously groping the new catgirl. The guy who first suggested the whole thing notices that the former jock isn't freaking out.  Instead, he's really into it.  Anon goes back to the thread and finds a notification. "Do not induce transformation while under the influence of alcohol or strong drugs.  May result in mental changes."

The new sabertooth girl lounges onto the couch and lifts up her tail, asking who wants first dibs. The whole group is soon lining up to take their turn.  First-anon is still worried though, he goes over to his TFed friend while she's getting fucked from behind. Asks him (her?) if he's alright. "Yeah dude. This idea was awesome. You guys should... GRRR try it."

They fuck her all night, and find that their friend hasn't changed back. They're worried because another notification warned that getting the TFed guy pregnant could prevent him from reverting.  But that can't be it. Drunk as they were, they all remembered to wear protection.  Anon keeps browsing, and finds more info. “In rare instances, the subject may not change back if they desire not to. Reversion is based on the subject's desire to return to human form.  If there is no such desire, the subject may become stuck in their new form indefinitely.

The sabertooth's friends plead with her that she needs to change back. They need her on the football team.  She stubbornly refuses, saying that she's never had so much fun.  In the end, she does get back onto the team, but as a cheerleader/mascot.