A synonym for legs, especially when referring to them in a sexual way.
Made famous by the line in the Rick Springfield song Jessieβs Girl, "He's holding her anus arms late, late at night."
223π 14π
The arm in which you wipe your ass.
"Hey let's arm wrestle left handed", "Nah that arm is weak, it's my anus arm."
Credit to Danny.
4π 73π