When a homosexual gentleman repeatedly slaps the buttocks of his arse-uppermost love-chum, using both hands on both cheeks, he is said to be playing the Briggsy Bongos. This was named in honour of the sex-crazed modern artist who, in the 1990s, beat the bum-drums of teenage boys in art colleges throughout south-east Asia and the English midlands.
Oh, Melvyn! I met a delightful young man in the Tate Modern lavatories (you know the middle stall on the first floor?) and he simply begged me to bend him over the cistern and play the Briggsy Bongos until he needed new skins.
The degree to which something is bogus. Bogosity is measured with a bogometer; in a seminar, when a speaker says something bogus, a listener might raise his hand and say “My bogometer just triggered”. More extremely, “You just pinned my bogometer” means you just said or did something so outrageously bogus that it is off the scale, pinning the bogometer needle at the highest possible reading (one might also say “You just redlined my bogometer”). The agreed-upon unit of bogosity is the microLenat.
Bush's claim that Iraq had weapons of mass destruction (WMD) pegged my bogometer at 1000 microLenats, producing bogosity of Biblical proportions.