when, at the end of the night, a busboy has three tables left to bus. you're excited when one table gets up to leave, but then two more come walking in right as you finish bussing the table. you then get the feeling that you're so close but never gonna finish, hence the term "blue balls"
Dude, I was two tables way from leaving but right as I finished the last one a freakin' walked in. I don't think I'm gonna be able to come tonight. Busboy blue balls is killin me.
by Brooks717 December 12, 2010