Blowing a guy while he has a dump rearing out of his rectum...You push the breaching dump back in with your thumb, or for experienced piper's, a toe. Then the male will produce a low bellowing sound. This is the devil's bagpipe.
"Yo, dude, did you get a B.J. from that chick?"
"Nah, man...even better...she was blowin' my rod and then I felt a turtle head pokin out and she pushed it in with her thumb...I made this weird whale-ish kind of sound...I had heard legends of the devil's bagpipe, but never experienced it. It was so awesome!"
For Males only; A mean streak is executed when you perform a reverse wipe. This means you wipe your ass back to front which creates a brown "streak" all over your scrotum. When anyone touches the tainted scrotum, they will think that you are very mean, thus creating a "mean streak"
"Oh my God!, I saw Mark undressing and ran over for a quickie...I started grabbing for his balls and smelled a ripened stink...I looked down and saw human shit all over his balls...It got all over my hand! It was disgusting!!"