some on who is iffy or changes sides and cant be trusted. Like a bobber when finishing bobbing in and out of the water, it's in the water then it's out it is never steady. Aka bobbin
"Yesterday day you said you was cool wit it and now you not"," man get outta my face wit your bobbin ass"
The thing you clip your keys on, also known as a caribiner. Also used by rock climbers. It was invented by the 6th graders at OLS.
Danny: "Hey, Matt, what's that thing hooked to your belt?"
Matt: "It's my bobber, it's so I don't lose my keys."
Danny: "I'm goin' to Walgreens to get myself a bobber."