Wham Bag 

Placing your genitals between the seat and bowl of a public toilet for sexual accomplishment - Originated by George Michael of Wham fame hence Wham Bag - Verb Wham Bagging - to Wham your bag.

" I had a right night the other day, me and George where out in East LA when he says 'I know a great little toilet round here if you fancy a laugh' Next thing i know were Wham Bagging the night away Wham Bag thank you mam!"

Wham Bag by Mighty Tim February 28, 2009

Whambagging 

The act of pleasuring ones self, by placing their penis between a toilet seat the toilet rim and slamming like shaquille o'neal

Favoured by one half of Wham's George Micheal.

" Hey Andy, fancy come Whambagging??"

Whambagging by Richie Blackwood February 28, 2009