Silly goose

Someone who acts really weird, dumb or goofy. Usually refers to stupid people

Tabatha is so dumb. She’s such a silly goose
Jared is a silly goose because he’s so weird

Heehoo

A positive response exclamation. Usually used when excited about a fixation or interest. Also can be used to express loss of mind or confusion.

Oh my god! I won my competition! Heehoo!
I’m so lost in this maze heehoo

quackawhacker

Someone who is a little crazy and silly

Damn! That hottie’s a quackawhacker.