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."
To argue back and forth with another, lobbing insults while doing so.
Nick: "Mary, we fucked, but I never promised you anything more, so stop being such a cunt."
Mary: "You're nothing but a two-timing low-life sign maker, Nick."
Nick: "If you want to continue this game of verbal volleyball, it'll have to be later, honey. I've gotta get to a meeting."
Ryan: "Jesus, who's that chick you were with the other night? I sure would like to pound that pussy."
Nikko: "Yeah, she's hot, for sure, but she's a little...how shall we say.... "under the weather upstairs".