Drop The Biscuit 

Biscuit is is a slang for a gun

and by droping the Biscuit you put or drop your gun down.

In Eminem"s song Guity Conscience ft dr.dre

dr.dre tries to stop the character"Eddie" from robing a liquor store he goes:

"Man don't do it, it's not worth it to risk it (You're right!)
Not over this shit, drop the biscuit (I will!)"

Drop The Biscuit by Doc.Q May 8, 2014

drop the biscuit 

phrase
1. The act of letting someone down.
2. Actually dropping a biscuit.

"Man, you always drop the biscuit. What's going on?"

drop the biscuit by bobbyDROP_tables May 7, 2008