A very large quantity in an unusual number or configuration (otherwise it would be an ordinary/English buttload). Compare: metric shitload and metric fuckton, which both designate a very large, but expected, quantity.

Adjective for something that definitely wasn't lame, but not quite "hot". In other words, slightly below being hot, therefore warm, like a nice pair of mittens.

The metric equivalent of a shit ton.

Seventeen. Why? Count for yourself the next time you have a metric buttload of anything; you'll see.

A most swag unit of measurement used by gangstas and pimps of a classier variety. Unlike its uncultured counterpart metric buttloads shitloads and fucktons are all base ten and as such far easyer to use in calculations.