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1 definition by Aminal

 
1.
A modifier meaning "even more than"

Most commonly used with buttload, assload, or shitload.

The modifier 'metric' has been co-opted from the term 'metric ton,' which is 205 pounds more than a 'ton.'

So, an 'assload' is a lot, but a 'metric assload' is even more.
A pipe broke, and now there's a metric buttload of water in my basement!
by Aminal June 09, 2004