A large quantity of something,
usu. intended to be greater than
hugantic or
ginormous but regardless is referring to multiple items or actions.
All right, recruit--I'd better see me a metric butt ton of
shoe polish on those boots or I'm gonna
rip you a new one!
-or-
I'm afraid I can't join you and the lads for the croquet match today, as I have a metric butt ton of wallhangings to color-coordinate before
the Gimp arrives this evening.