Passing an object through someone's butt crack when they are not looking.

A tourist to sub-orbital or orbital space, through commercial space flight programs.

The act of swiping your hand, with a credit card motion, in the arse crack of fellow person.
Often practiced under the influence of alcohol.
Sometimes used as a way of getting someone’s attention on the dance floor, winding them up or just as a general flirtation.
A game invented by the infamous Ellie 'the terrorist'.

Also practiced by her partner in crime, Lucy 'the hutch'.