Bobbing for brown apples 

The phrase given to the act of having ones head rammed down the toilet, often by a school bully or an obnoxious drunken 'friend'

Chris emerged from the toilet cubicle with toilet water dripping from his hair. Robert had decided to make an example out of him by forcing him to go bobbing for brown apples.

Bobbing for brown apples by Macbeth the Wonderslave December 3, 2009