Detailed Instructions: 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.
Q: Text: in advance, i'll apologize for any spelling mistakes that might occur. i've been lurking around a lot on here, and i figured i might as well tell my own story.

like most others, this didn't happen today but took place around 4 years ago. 

at the age of 13 i had found out about the action to be done when there's nothing else to do. i was a horny little shit back then, now that i remember it, and i was always awake doing "something". 

i didn't really know how to properly masterbate back then, so my idea of doing it was to hump the shit out of something. i would either do my duty in my bed, or, the worst of the options, in the bathtub.

so there i was, my younger 13 year old self, inflicted with the insomnia of being horny as fuck as i just stare at the ceiling in my room. it was three in the morning, so i decided that since no one was awake, i would go into the bathroom and do my business. 

i turned on the light as i entered and shut the door quietly. the lock on the door is one of those simple ones where you just place the chain into the hole and slide it in, so i lock myself in.

here's where the fuck up truly begins. i had taken off all of my clothes and was going to town on the cold, plastic surface of the bathtub, when i guess i just passed out. after an hour of being in there, my mother had woken up to use the bathroom when she noticed that the door was locked. she apparently checked my room and noticed i wasn't there, so she just broke the door down, thinking of the worst things imaginable.

instead, she breaks the door down with the image of a boy, butt-naked, sleeping with his face pressed into the bathtub. she never told me anything after that, all i know is that 1. i ended up back in my bed the next morning, and 2. i convinced her i was going to take a bath when i passed out.

she probably didn't believe me.
A:
TIFU by humping a bathtub (NSFW)