"At ease, disease!"

This iconic line/insult is said by Robert Rudolph Remus, also known as Sgt. Slaughter, the strongest member of the G.I. Joe who really can whip anyone into shape the hard way.

"It's about time we get to business as I'd rather not stand around here and lollygag like it's some girly tea party."

Considering he's a professional wrestler who found himself on G.I. Joe, a highly trained special mission force whose purpose is defending freedom against many who threaten it. He really is one serious man you don't want to mess with.