Having someone come along for a ride in order to use the carpool lane. Only for the purpose of getting to the destination faster, not companionship.
Yeah I had to get to school fast because I was late so I used John as seat meat.
by rockntubakid April 26, 2010
1 more definition
The flesh that gets trapped in gaps and holes in seats and pokes out. Especially with fat people and garden chairs
by whalesharkz December 05, 2013