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: so obviously this happened a year ago.

i was 17, me and my girlfriend of like a year were getting it on in her parents house who weren't home. we had been making out for a while and it was taken to the next stage. we were on our way up the stairs and we crashed through the door at the top of her staircase which led to the bathroom apparently. so we undress and she kisses down my torso. god damn it felt good. she starts blowing and i feel fucking great. 10 minutes in and i hear a noise from downstairs which i decided to pass off as the dog fucking about downstairs. so we continue and i hear what i again presumed to be the dog bounding up the stairs but i didn't care because i was close to the finish. before i knew what the fuck was happening the door flew open and her mother is standing there staring at me with a look so sharp it could cut diamonds. this is where the real fu came. it came the same time i did. i finish in her mouth while locking eyes with her mother. i yelled, her mother yelled and we stood there for about a second covering ourselves before her mother started screaming the house down. it's at this point, ladies and gentlemen, i must tell you that my girlfriend was not a sallower. her mother screams "what the fuck do you have to say for yourself ----." and with that came one of the most horrific yet hilarious moments of my life. my girlfriend goes to say sorry but forgets that she has a mouthful of my seed. with the initial "so" sound coming out so did the contents of her mouth. the three of us watched as it fell in what seemed like slow motion to the floor, or what the thought would be the floor anyway. little did we know her dog had walked in. cum hits dog, dog runs away, mother explodes. so after hours of screaming and being told never to come back i left. it's safe to say i'm not with her anymore.

 
funniest yet most horrible day of my life.    

edit: i know there's a bunch of you who refuse to believe it, and honestly i wouldn't either but it's the gods honest truth, so after through scrolling though fucking tonnes of messages with my ex i've finally found the conversation we had about it. i say conversation, we said very little and it was never spoken of again. 
here; http://imgur.com/kaffiu7
this is everything that was said about it over messages. i think she just wanted to forget about it. sorry, that's all i got, guys. i tried.

TIFU by getting a blowjob