another name for a seat heater. generally located in the driver and front passenger seats in cars.
a: woah, my but is so warm!
b: yeah man, heat seaters are on!
by rocknro8907 January 3, 2012
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Someone with a large or wide butt.
"Damn, did you see the big seater walk by"
by krazyartgurl February 9, 2009
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A restroom, usually in a gas station, that only has one toilet. Sometimes is shared by both sexes.
Dude I really felt sorry for those girls going into that unisex one seater after I blew that shit up. Guess I shouldn't have gone to Taco Bell last night, after the bar.
by Go App State November 11, 2012
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A group of people who seat themselves at a table in a restaurant where a host or hostess is meant to seat you, thereby causing an inconvenience to the wait staff. Can also be "self-seater" singular for one person.
"Oh, there's some self-seaters on the patio, how annoying".

"Who sat those people there?" "Nobody, they are self-seaters "
by Peoplewholikejamillas June 4, 2017
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- a word to describe someone who is too big (fat)

to fit in one airline seat and is forced to buy another seat.

- a word to describe someone who is on the edge of becoming too fat to fly on in a single seat.
You better watch your diet or else you will be a two-seater and fly extra. Well at least you can have have two carry-ons baggage on the bright side.
by Boosh23 December 4, 2009
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Can be used as a school bus or a sunday school bus.

Can also be used by large families with dogs.

Commonly used for religious reasons.
1. Wife: "We have 10 kids, and a standard 5 seater car isn't big enough!"

Husband: "Never mind, I found us a nice, white bus in the paper that the local church is selling! It has 15 seats and will do this family well".

2. The sunday school 15 seater bus is picking us up soon! Get your things together, they won't have spare bibles to lend.

3. We can take the dogs to the beach with us in our brand new 15 seater bus! Jump in kids!
by Bitchezbehatin' September 24, 2011
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