L4D2 - Grenade Launcher Jumping: OTL

Me and my sister try out this exploit and after many trials, grinding of teeth, cuss words, pools of blood, and spamming of keys, we EVENTUALLY got it. Parties were held. Hallelujahs were screamed. A ray of light -
Just kidding, but it awesome.
Brogressive Ideals(Nick) - Me
Pigeon(Ellis) - Sister
Music - From Homestuck, name - Pony Chorale, by Michael Guy Bowman

[@M99jj]

[S] Nick: Ride Grenade

[@leoallen777]

Derp. I think you should try aiming at your feet and crouch-jump just as it explodes. Like in TF2!

[@HardBoiledYoshi]

@leoallen777 Tried that, believe me, I did. Doesn't work. Eh, Valve physics.

[@theheadlessstickman]

Does it still work? Lol

[@HystEXP]

I’d assume, but seeing how you commented this one month ago you probably already played the rocketdude mutation... if not I’d recommend that to rocket jump