When someone who has a massive head cant hold the weight of it up when running.
Hahaha! Seen him running the kettle nonce! Cant carry his head bless him.
Shnerble is when you rub the side of your balls after a build up of sweat with your index finger and hastily swipe it across the top lip of a passer-by whilst shouting the word Shnerble and running off.
"Omg! you should of seen his face when I caught him with a Shnerble. It must of smelt so bad!"
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