When you jizz, and don't clean up properly. After a while it dries and crusts up on your nuts.
Guy#1: Hey man, I was jerking it the other day and missed some on the clean up.

Guy#2: Ah, I hate when that happens.

Guy#1: Yeah, I had some serious nutlock later.
by JHE June 01, 2009

6 Words Related to nutlock

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.