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.
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''