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 27, 2010
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The person or persons attached to your project of group assignment that provides absolutely no value to the activity other then keeping a seat at the table warm.
Person 1: "Maybe we should ask Jason to do that."
Person 2: "Don't waste your time. He is just seat meat."
by Man in the White Coat March 10, 2017
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Another way of referring to the ass.
Honey, instead of the usual vaginal play this evening, I would like to break one off in your seat meat.
by Clint Fu December 17, 2015
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The flesh that gets trapped in gaps and holes in seats and pokes out. Especially with fat people and garden chairs
Look at that land whale her seat meat looks like you could cut it off and fry chips in it.
by whalesharkz December 5, 2013
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To have an unusally large ass, kind of like the side of beef Stallone punches in Rocky
Oh great, here comes meat seat
by Dexter Morgan September 15, 2008
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A clan in the MMORPG Runescape centered around large penises and woodcutting.

8+ inches
99 woodcutting
Imper588: Hey mic, you heard about that cool clan "Meat Seat"?

Mic T: Ye m8, but I severely lack the penis length to join :(

Imper588: Same :(
by Poopstain687 June 15, 2011
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A meat seat is when someone else has defecated in a toilet before you and has not flushed.
I innocently went to a toilet stall and left in a hurry when I noticed that someone had left a meat seat.
by Charlie Poot February 15, 2007
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