To stealthily entrap a friend/stranger/relative(?) in a situation whereby you antagonise them over a virtual medium (text, social network, etc.) until they decide to confront you due to frustration and/or the sake of theatrics; in accordance with their response the baiter then surprises the unsuspecting baitee with their emancipated genitalia.
The subsequent reaction to this unabashed exposure on the baitee's part may be subject to a time-delay, depending on the level of tension previously generated before the 'cockbush'.
"My housemate was totes baiting me for a cockbush! He well and truly flashed his dongle in my direction; how sullying."
"Beware that alleyway - cockbushers are known to target those inexperienced in the ways of cockbushing..."
"I cockbushed a total stranger, ergo my prison sentence."
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.