schplog

Harpo

verb: to hastily and unobtrusively lift your leg and tuck it firmly into someone else’s unsuspecting hand, ala Harpo Marx (his best move).
“He harpoed me before I even knew what was going on.” Also: “pulled a harpo”.

(see Yiddish: stop harpo-ing me a cheinek)

noun:  the same maneuver described above

“He gave me such a harpo” or “Give me a harpo attack, why dontcha!”