A dead cock is the meaning for having a very sore penis. It can happen from the following.
1. Have sex so many times in 1 day.
2. Getting punched/kicked in the penis.
3. Masturbating a lot.
1. ''Hmmmm, oooowww. Fuck man! that bitch road me all night!''
2. ''I got the most deadest cock ever!, gorge is going around punching people in the cock, watch out dude.''
3. ''Wow, i never knew you could get a dead cock from masturbating a lot!, well fred don't try to wank(masturbate) 50 times in one day.I'll be out of juice the next month.''
fred: ''Hahaha, iv'e had that same experience before''
When a person places their two hands together and sneaks up behind someone, squats down and jabs their tip of their fingers up their anus through pants or whatever their wearing, causing the victim to have a saw anus.
Suspect: sneaks behind victim.
Victim: standing, talking.
Suspect: squats down and puts hands together.
Suspect: aims hands and jabs fingers up but
Victim: AHH! WHAT THE FUCK WAS THAT FOR?!!!!
Victim: ahh, my ass(anus) is soo sore.
Victim: Fucking, poo jabber!