Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: tifu by letting my girlfriend set my ball bag on fire and this is how it all went down. btw this literally happened 10 minutes ago.

so my girlfriend is in nursing school and she is currently studying for a big test this week and earlier informed me that she is reading about why the nut sack retracts into the body during cold weather and drops down when it is hot. i didn't think much about it and went on with taking my shower, but when i got out i thought i would be a great boyfriend and allow her to inspect my man sack for educational purposes ya know. so there i am standing in her room with one leg on the floor and the other hiked up on her bed like the captain morgan man. but closely inspecting it isn't quite enough, to really set the bar as the best boyfriend ever i decide to demonstrate the retraction and decent of the testicles. retraction was no problem as it is rather cold in her apartment, she is impressed and so i move on to phase two on my plan. i ask her to grab a nearby lighter (the long kind that you use to light the grill) and place the flame under my scrotum so that the heat can rise up and warm my man parts. as she does this her hand moves up a little and next thing i know i can hear the hairs crackling and feel the pain of my now flaming pubic hairs. i quickly extinguished the flame and inspected my sack for permanent damage. i think the boys are gonna make it, but lesson learned don't play with fire... especially not with your pants off.

TIFU by letting my gf set my ball sack on fire