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, as usual, this wasn't today. it was two months ago. so for some back story, i used to do parkour *a lot* when i was 14-16. i was even on my local town's parkour team. it was a lot of fun! but now, being the 19 year old fart i am, haven't done it in a while. my friends and i had recently been going to the gym a lot and we happened upon some parkour videos on youtube. i regale my times of parkour and free-running triumph to my friends and they say "we wanna do parkour!" so i inform them of a nearby gym that has open gym days where we can do parkour in a safe setting. sounds good to them and we all agree to go! i haven't done it in a while but i figure i'll still have at it. so we venture off to the gym, sign the waivers and pay the open gym fee and start doing some parkour! i teach them a few moves, we're tumbling and having lots of fun.

**here's where i fuck up**

so we start setting up an obstacle after teaching them rolls, dives and landing techniques. we set up a sweet obstacle where you jaguar-leap (you jump, arms outstretched, land gently on your hands and immediately into a roll) over a cylindrical rubber thing, then another jaguar leap into another roll. seems easy enough. so my friends give it a go, hell yeah. i'm stoked to show off my moves. i get pumped, i'm ready to hit these leaps with absolutely full force and speed the likes of which i have not attempted in two years. i sprint, i jump, i land my first roll flawlessly, i hear some distant "daayyumms", i come up into a jump from my first roll to transfer into my next leap and as i'm getting ready to xfer into a roll...i see a girl no older than 4 years old come sprinting across my landing strip decked out in her little gym gear...i can't stop myself. i'm in my roll now and sprawling out of my roll awkwardly to avoid her, my heavy 19 year old legs completely side swipe the shit out of her as her mom watches in horror from the sidelines. i shit you not, this little girl does two. count 'em. two. back flips. mid-air. and lands so hard on the gym floor she bounces a little with a grunt. starts wailing as all the parents on the side-lines are just menacingly looking at me. i can't believe what just happened. i rush to the little girl's aid along with her mom and ask if she's okay and the little girl is a god damned trooper. she looks at me with teary eyes and says she's okay and everything's fine and she wants to go on the trampoline. her mom is cooling off now because she sees how calm her daughter is. i'm holding back a laugh at how casual this girl is after getting hit so hard she did a double backflip.  

later on her mom tells management that she's sorry and it was her daughters fault for not watching where she was going and all was good. my buddies were absolutely crying laughing their asses off. i bought the girl a can of orange fanta after our workout.

TIFU by doing parkour