When another restaurant goer steps in front of you preventing you from gaining access to the soda fountain. Either due to their indecisiveness or total lack of self-awareness.
Guy #1: Dude, where have you been? Our food is getting cold.

Guy #2: Sorry, that girl totally just coke-blocked me over there!
by mma206 September 17, 2010
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someone that is stopping you, in some form, from getting cocaine. kind of like a cock block.
god damn leonard is bein a coke block! she won't share any!
by allisonthedopeshit May 6, 2008
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