"Meshuggaas -- Yiddish for crazy."

No; it's yiddish for craziness (noun). Crazy (adjective) is "meshugeh".

From "Glossary of Yiddish Expressions" on line, which transliterates somewhat differently into our alphabet:
Meshugass - Madness, insanity, craze
Meshugeh - Crazy
Meshugeneh - Mad, crazy, insane female.
Meshugener - Mad, crazy, insane man