2. N: a person who is slowing you down when you have to shit really bad.
3. N: a man or women who enjoys a person deficating on their face.
2. Dude stop being such a shit lock and let me go to the bathroom.
3. Darrin you sick shit lock get away from me i will not deficate on your face!
"Don't take that! It's been shit locked!"
"I forgot my bike lock, but luckely I never leave home without my shit lock."
"Some people hide their keys... I just put shit on things. That is a shit lock."