Sound effect commonly used in the place of, or to accompany, the word bellend.
Frequently presented with a signature hand gesture:
Place the tips your thumb and first finger of your right hand together and shake from the wrist as if ringing a bell.
(adj.) Along the lines of "pwned" or "rejected;" commonly used on xoxohth.com and biglawboard.com to indicate when someone has been beaten in an argument or otherwise been relegated to failure.