What is Grumption?
1.
The quality of a beer mugs 'thumbrest', and its ability to allow one total control over the mug.
A beer mug with perfect or absolute grumption can be picked up with a single thumb. A large amount of beer mugs have good grumption, but the majority are on the lower scale of the grumption continuum.
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2.
Someone with overly large testicles
"That bull has Grumption!"
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