"Critting" refers to the act of dropping a duece or "bomb" in the toliet.
Critting got its meaning from RPG games, where you critical attack someone.
In this case you are critical attacking hitler with you're facilities...
The most common use of this word is on instant messaging, when typing out, I need to go take a crap is just not cool enough and/or takes too long to type out.
The 50 cal is out of ammo, going to try a different tactic.
I need to go crit hitler.
In times of extreme bowel urgency one might find a pressing need to "critler" and relieve the pressure that comes before critting Hitler. One word can express this urgency accurately.
*Flush* "Ahhh... Critler accomplished."