Chargrilled
I Don't Fall Over I Do Random Gravity Checks mug.
£14.95
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You never know where there could be gravitational dead spot could be. Don't ask but those things are nasty! It's not clumsy or accident-prone. The more scientific term is "licensed gravity checker". Help explain this special occupation with the help of this scientific t-shirt!
Source
AWIN
Store
Chargrilled