My hubby would have said, "A buttload, that's how much." Mmmm, yummy, a "buttload" of popcorn.
It falls JUST short of a buttload or I'd have called it that, too! :)
So is "buttload" a standard unit of measure, or is it determined by the load capacity of one's individual butt??
I'm pretty sure it's standard. The metric unit is called a 'bumload'