second hand high 

When you get high off of someone elses second hand smoke, usually weed. IT IS POSSIBLE.

Ricky and Trev were clam baking the shed last night and it gave me a second hand high!

second hand high by Julia Raymond December 20, 2006

second-hand high

Usually occurring at a concert, in an atmosphere with lot's of people smoking (most likely weed) and exhaling mass amounts of smoke into the crowd. You then inhale a mass amount of this second-hand smoke, and end up high.

Person 1- "Man, you are SO high."
Person 2- "Nah man, there was just SO much smoke at that concert, I probably got second-hand high."
Person 1- "Makes sense dude, makes sense."

second-hand high by wonderous12345 September 27, 2010