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 this just happened last night, and boy oh boy was it a doozy.

first though, some background - i've smoked cigarettes for the past couple of years on and off since the beginning of high school. (i'm 23 gais)  i usually ended up using them when i was stressed out combined with booze, of course. a few weeks ago i had some heavy shit go down in my life that had messed me up a bit and so i've been smoking since then. nothing major, maybe like 3 packs a week? ok done.

anywho - i've been casually talking to this girl for a few weeks, she's a smoker. i was over at her place last night watching a movie and hanging out; we had taco bell and watched superbad. pretty chill night if i say so myself. so we go out to hang out on her balcony to smoke after the movie. i pull out my pack, lend her my lighter, etc. so, not even 5 minutes goes by and she asks me, "are you really a smoker?" me being the ever confident funny guy brush it off as nerves making me look nerdy while i smoke. i just say something along the lines of "hey, i'm just nervous being around you sometimes blah, blah" (first time seeing a girl since a big break up, i'm technically not lying. i actually am kinda nervous) so then she proceeds to call me out on my shit. she states that i don't actually inhale when i smoke, aka me being a filthy peasant who is trying to be mr. coolguy smoker dude. i kinda scoff at the idea but start to see what she's saying. she then shows me the difference between the way she and i "smoke". a wave of embarrassment washes over me as i immediately see the difference and realize that for the past 8/9 years i haven't been smoking cigarettes. i've been taking the inhale in and then pretty much immediately exhaling. guys, i have smoked in front of friends, family, and significant others and no one has ever said anything. i've even had girls say that i look more attractive or whatever when i smoke. i smoke in front of my mom guys. my own mother has never said anything. so as i sit there at 5 am on her balcony; i'm trying to brush off the monumental sensation of fucking embarrassment ripping into my now rapidly depleting confidence. we chit chat for a while longer with small talk and then she proceeds to say she is tired and i rush in with, "well, i guess that's my time to leave then." she walks me to the door, we hug (we hugged -_-), i walk back to my car like the plebeian i am and proceed home in the most awkward car ride i've ever had with myself.

TIFU by not knowing how to smoke cigarettes.