A beer or mixed drink that someone has walked off and left from a bar or a party.
1. Dean must be really drunk. He is drinking that second hand drink. Someone probably spit or pissed in it and is watching somewhere laughing.

2. That second hand drink has a cigarette butt in it. Do you dare me to drink it anyway?
by second hand drinker July 31, 2009
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when a sober person pretends to be drunk or acts stupid among drunk people
is that guy drunk?
no, it's just second hand drinking
by slashthenoob May 8, 2010
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