ginsu knife

A gimmick made famous by late-night television ads in the 1970's that promised but wait, there's more!" The Ginsu Knife was able to cut through aluminum cans one minute, then slice a tomato wafer-thin the next.

Roommate #1: How are we going to get this Christmas Tree out of our apartment?
Roommate #2: Hand me the Ginsu Knife and I'll cut it up into little pieces.
Roommate #1: But wait, there's more: what about the trunk of the tree?
Roommate #2: Shit the Ginsu Knife works on the whole tree!