1. One who masturbates in public
2. One who gives obvious signals of masturbation in public.
1. Bry: Dude, that one guy on the plane... did you see him? His hand was all over the inside of his jeans and then he just... sprinted to the bathroom...
Reek: Yeah, he was a real cacklejack, alright.
2. Reek: I can't believe he left a used condom at our door. What kinda retaliation for a joke is that?
Birr: None at all. He's just a dumb cacklejack.