Green’s Dictionary of Slang

giggling adj.

SE in slang uses

In compounds

giggling gas (n.)

(US black/teen) nitrous oxide.

1962

P. Crump Burn, Killer, Burn! 158: You guys are mighty damned happy. Wha’cha been drinking, giggling gas?

giggling gear (n.)

the mouth.

1997

(con. 1960s) A. Frewin London Blues 132: Somehow I could not picture Linda getting her giggling gear around Sonny’s stiff black cock.

giggling-pin (n.) [pin n. (1a)]

(US) the penis.

1966

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