a word to describe a person who's too drunk a good way to measure his/her drunkenness is to ask them something....if everything they say is yeah okay (yah ok being the slurry term), they're pretty much wasted, and therefore yahok.
A: B, wanna do a cartwheel?
B: yahok!
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Man, B was so yahok last night, he threw up everywhere
A conjunction of the words 'yeah' and 'course'. Used when the two words are supposed to follow each other in quick succession in a sentence, and end up blending in with one another.
Person 1: Hey, you going to Paul's birthday party?
Person 2: Yahcourse!