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: (not today; from an former relationship now, but screw it, it's probably my best sex story ever. pretty tame - not a body waste story or explicit descriptions, just embarrassing.)

so, i'd been in a fling at university for a few months with a girl i really liked - more a fuck-buddy kinda thing than a real relationship but got feelings and yadayada, so we decided to become 'official'. part of that involved meeting her parents...

so, i went over to her family home a couple of days before i was due to meet them, while her family were on holiday (we lived in student housing - her family lived in another county entirely), so it was just me and her at the house. the fuck-buddy side of things really hadn't died down at all, so we were going at it like rabbits the whole time.

i was meant to go and pick them up at the train station like a good daughter's boyfriend at 3pm (with my girlfriend in the car for non-awkwardness' sake, obv...at that stage, i figured that was the only awkwardness that could transpire; how little i knew). so at 1pm we knew we had plenty of time for another long round of fucking - her on top.

except at around 1.30pm we heard the door opening. now, i knew from what my girlfriend had told me that her parents aren't one for knocking at the door for politeness and often barged right in. so what did i do in my panicked, confused state? i literally threw her off of the bed onto the far side from the door...and ran straight into her ensuite bathroom, grabbing her bedcover as i ran to cover my modesty.

that crash obviously alerted her parents, and her mother did indeed come barging straight in, to find her daughter naked, standing up, both thinking 'wtf just happened?!". my girlfriend blushing, ran into the bathroom and gave me the biggest look of disdain i've ever seen.

her mother spoke first: "er...we got onto an earlier train and got a taxi back...didn't you get our text?" - obviously not, since we were probably busy fucking by then. "so...where is he anyway?"

my girlfriend: "i'll be out in a minute! i was just...er...getting changed! and now i'm on the toilet!" - quick thinking on her part, i guess, but flawed:

mother: "...okay, but where is he?"

girlfriend: "he's...in here too?"

mother: "i guess you *are* close already."

of course, at this point her mother had figured it all out and we knew she knew, so all we could do was grin and bear it...except all we had was the one, single bedcover...and one, tiny flannel. i'd already thrown my girlfriend's modesty under the bus so now was her time for revenge. i got the flannel.

mother: "so do we get to meet him?!"

we shuffled out, me holding the flannel across my hips like a magician doing the floating ball trick, my girlfriend completely covered, both of us still blushing madly.

luckily, the mother saw the funny side but unluckily, this meant she now hilariously (for her) prolonged our embarrassment by having a 10-minute long conversation before she let us get dressed.

the only silver lining, i guess, is that her dad and sister stayed downstairs...

TIFU by leaving my girlfriend stranded naked in front of her mother (but she got payback..) [NSFW]-ish