Sexecutioner is a supporting character in the heavy metal band Gwar, played originally by Mike Delaney, and finally by Chuck Varga from 1989 until 1995–6, with special appearances in 2000 (the You're All Worthless and Weak concert), 2012, and 2014.
There are conflicting origin stories of the Sexecutioner - the Slave Pit Funnies (from 1989–90) suggest that he was summoned in an ancient ritual by Oderus, and was raised from infancy to become Scumdog material.
Following his departure, he co-founded Hypereal Productions with Don Drakulich (Sleazy P. Martini), who had also retired from touring.
According to Drakulich, the term "bohab" was, in part, invented by Varga - initially, it was a nickname for a socially inept friend of Hunter Jackson's (named Bob), invented by Dave Musel; after hearing him say this (he was in the room when this happened), "He instantly shortened it by getting rid of the Slohab then coined as part of the Slave-Pit lexicon to refer to anyone who is socially awkward, who drones on about trivial matters while boring all those around him.
In particular it refers to those who are tedious talkers who refuse to let bored body language and avoidance by others stop their persistently friendly overtures - now known as bohabery.