when two people have nasty crazy sex on top of a ropes and challenge course. Often this is done by harnessing the girl to the guy with the use of a harness and caribiner.
Omg man last night i totally caribined greeno during project adventure, it was the best caribiner ever
A person that shows care or concerned about bear wiener. May refer to a person with legitimate reason to be concerned with male bear sexual health, such as wildlife officials or vetrenatian staff, or to a person with more unnatural concern or interest in male bear genitals.
That park ranger is such a caribiner.