(uncountable) The state of being goofy. / (uncountable) Goofy behaviour. / (countable) The result or product of being goofy.

plural of goofiness

silly, quirky

(surfing, snowboarding) Riding with the right foot forward.

(surfing, snowboarding) One who rides with the right foot forward.

A Disney character: a slow-witted anthropomorphic dog with a goofy laugh.

plural of goofy

a surfer (often left-handed) who surfs with the right foot forward

(neologism, Internet slang, African-American Vernacular) Silly, dumb, foolish.