A term that is generally used to describe children's movies that rely on slapstick or lowbrow humor instead of a plot, if even one intended for children. Examples include fart jokes, bumbling bad guys, gratuitous nut shots and extreme overacting to play up any of the above.
Per Amy Schumer: A "Wacky Shirley" is when a girl sits on a guy's face getting her pussy eaten while reading her tweets. She invented it because all the weird sex stuff is geared towards men.
I pulled a "wackyShirley" on max today! He liked my aggressiveness and the me reading tweets turned him on even more"
A dance where you extend your arms out not so much, turn your hands sideways and your palms face you, then move it up and down, one hand going up, the other hand going down.
"Bro, wanna do the wacky hand with me?"
"Duuuude the wacky hand is like s o o o radical."