A small cannon placed on the ground in the manner of a coffee cup. The fuse is placed in the vent hole and flash powder is placed in the main bore. Produces a thunderous explosion and can be refilled time and time again. Thunder mugs have been in use for hundreds of years. Also a name for an under-the-bed toilet from the out house days so people didn't have to venture out at night.
His thunder mug launches golf balls hundreds of yards in the air.
They fired the thunder mug at half-time and I could hear it at the frat house !
Did you hear grandma on the thunder mug last night ?
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