Time traveller: I did it boss, I killed Hitler!
Boss: thats weird, the future didnt change. Are you sure?
TT: Yep he was in a concrete room full of swastikas sitting next to a dead dog and lady. Shot him right in the head.
Time traveller: I did it boss, I killed Hitler!
Boss: thats weird, the future didnt change. Are you sure?
TT: Yep he was in a concrete room full of swastikas sitting next to a dead dog and lady. Shot him right in the head.