Acroynm for Secretive Hook Up Boy. One of your guy friends that hooks up with girls, but will never tell anybody, and normally when this person is asked, they deny everything. This person normally tells you and your friends everything else about them, besides the goodlooking or mostly nasty girls that they hook up with.Add the "by" at the end. Same applies for girls, Shuggy
"Darren you tell me everything, what the hell, fine dont tell me you shubby"