1.) to be on or under the influence of marijuana
2.) to have marijuana in your possession that you plan to sell
1.) your eyes are blasted man, are you on deck?
2.) hey bill i need a gram by tonight, are you on deck?
by TFS September 21, 2005
An adjective to describe an attractive person.

Refers to the on deck status in baseball, namely being a person who is very much "ready to go."
Did you see that girl? She was ON DECK!
by Mediocrates May 19, 2004
About to have sex with someone.
Mark was on deck with Bill before Charlie beat him to first base.
by Kerl lozl August 08, 2004

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