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: i was out on the paintball field recently, as i usually am friday afternoons/weekends. some background, i've been playing for two years and am utterly anal about the safety rules - they exist for a reason. one new rule this year is that you must put your "barrel bag" (basically just a small nylon sack with a bungee on it, designed to be put over the barrel of the gun as a failsafe in case it goes off in the safe area where nobody has masks on.) as soon as you are out. usually, it's just required to have it on before you enter a safe area, so you can put it on when you get to the safety net rather than while you walk to said net. not a huge difference, but i'm still getting used to it.

i'll spare you the details of my glorious defeat, but i was outed from a game and started walking back to the safety net i mentioned to leave the field. it was late in the day and i was tired, having just spent several hours running through the woods on adrenaline. so, i naturally forget to put it on. my friend, let's call him f, gets shot out as i'm walking and trots up to me. "put your barrel bag on" he says.

now, when i was shot out i was hit around a half dozen times from fairly close in the top of my head where my mask didn't cover. my ears were ringing, and my head hurt, i was tired, cold and sweaty at the same time, and a little pissed off. so i decided to say "it can wait until we get to the damn net..."

f insists that i put my barrel bag on. frustrated, i stop and say "dude, it's fine, it's not gunna go off!" to prove this point, i hold my left hand in front of the barrel, about four inches away. "i have my safety on, dammit!" i say.

big mistake.

now, what i had intended to do was tap my finger against the trigger for emphasis, showing that it was securely locked in place. but, i hadn't turned my safety on. i pulled the trigger twice into my hand, four inches away.

it felt like my hand had been hit with a red hot hammer. i swore like a sailor, while f laughed at my pain. i'm fortunate i was wearing padded gloves and the sleeves of my jersey came down onto my palms a bit, otherwise that could have broken bones in my hand. f laughed, everybody at the field laughed, and i sat out for the next hour because my damn hand hurt so much.

i'm not breaking that rule again.

TIFU with a paintball gun.