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1.
The act of wiping the rim of a barmans bumholes sought from a bar, so as to remove the taint of rat poo that is likely on the bottle from when it was left outside for storage.
verb- to derat, pronounced dee-rat
oh man I can't believe you just drank from that without deratting it!

derat that bottle before you drink from it!
by Mr Untouchable January 17, 2008
0 3

Words related to derat:

bottle deratting piss rat rat piss