Top Definition
A once-common game played mainly by boys in their first year of secondary school at Inverkeithing High School in Fife, Scotland. When on a crowded double-decker bus, one must stand at the bottom of the stairs between the two decks and not move. Others will stand behind you, and as many people will try to cram themselves into that tiny little space as possible. Some will get a bit too excited, attacking people and jumping off the top deck, inevitably leading to a riot.
"I heard Chris and John got into trouble yesterday by playing Pile-Up."
by SmileyDudette July 08, 2009

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a collision involving numerous motor vehicles
There is a nasty pileup on the highway.
by The Return of Light Joker November 05, 2008

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The Urban Dictionary T-Shirt

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gather, collect, arrange
Dude ! Pile up some stuff we might need.
by NeOnD June 10, 2008

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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a "pile up" is when u take a monster shit, and when da shit gets piled up on da otha shit.
omg man, afta i ate dat spicy ass taco bell, i had such a big ass pile up it was starting 2 overflow in da toilet.
by pimp daddy dollars September 06, 2004

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt