/boh-zoh'tik/ or /boh-zo'tik/
[ from the name of a TV clown even more losing than Ronald McDonald ]
adj. Resembling or having the quality of a bozo; that is, clownish, ludicrously wrong, unintentionally humorous.
Note that the noun bozo occurs in slang, but the mainstream adjectival form would be bozo-like or (in New England) bozoish.