When you act like Hitler. Things like Nazi Saluting, and shouting Sieg Heil. Or maybe Marching
Guy 1: Why is that guy marching around, saluting, and shouting stuff in German?
Guy 2: Ignore him... He's just Hitlering!
Weirdo: SIEG HEIL!
Guy 1+2: Umm... Stop Hitlering!!!
The act of picking one's own ass and smearing the poop on another's upper lip, giving them the appearance of a Hitler mustache
Jim: You'll never guess what I did last night!
Jim: You know Bill? When he was sleeping last night, I hitlered him!
Bob: What's hitlering?
Bill: What are you guys talking about? And why does the room smell like ass?
v. The act of trapping another in a bathroom while you defecate, thus causing your fumes to render the victim unconscious.
Person 1: What do you mean you Hitlered the baby?
Person 2: He was in the bathroom while I took a shit. I thought he was sleeping. I didn't realize I was hitlering him.
Person 1: WTF?
A prank common among guys sleeping in some kind of dorm: where the last person awake rubs shit on their finger and rubs it under their sleeping freinds nose giving them a Hitler Moustache
I kicked him out of my apartment, he kept hitler-ing me.
This word is !always! used in combination with "around" since this is an attempt to correctly translate the German expression "rumhitlern".
If someone is: extremely angry, fault-finding, arguing, running someone down, really getting worked up about something, or just generally freaking out about something, that person is hitlering around.
1. Employee A: "Hey what was that guy's problem, man ?"
Employee B: "Dunno, he was just hitlering around because we wouldn't accept his credit card."
2. Employee A: "What was that guy just hitlering around for ?"
Employee B: "Oh, because we wouldn't accept his credit card."
3. HER: "I thought we had a serious relationship! I thought you love me!? So why the hell did you... "
HIM: "Stop hitlering around - I already told you I didn't do it ! ! !"
That is when you get done doing a girl in the ass you wipe your dick you her upper lip
would are you doing, I am hitlering you