When one's
arms are particularly
large; the muscular state of one's
arms after a workout....Derived from the word "pipes", referring to the arms.
Sean: "Shiiiiit, I gotta wrestle
Dan next week in the sectionals."
Max: "No easy task there, dude. Saw him last week. I
don't know if he'd just come from the gym or what, but that mofo was all piped up."