The act of pulling on testicle upwards and letting it rest on the tope of the jeans, therefore appearing to have a hernia.
The person that performs the act is said to be doing 'the hernia'.
The best way to perform 'the hernia' is to wear a t-shirt and stretch just next to the victim.
Tom 'Dude, i totally give the bar maid the hernia and she nearly dropped my pint'
Roy 'Totes ma goats'.