A fork of Rural Dictionary
When the dick is too small to deepthroat
Jenny: so how far did you get with Steve Jessica: I gave him Deep Mouth Jenny: what? Jessica: his dick was small
Refers to an extreme thirst brought about while high on marijuana. Symptoms include: Extremely dry mouth, Excessive thirst, and a motivation to drink everything in sight. Also referred to as simply, deep south
James Bonfire had Deep South Cotton Mouth last night and drank 5 water bottles in an hour