Blow your friends’ minds and crash their parties with this amazing Upside Down Beer Bottle Glass. This incredible drinking mug has the mold of an upside down beer bottle glass shaped into the base of the actual mug. If you’re not confused yet, check this out – the glass is tempered and is dishwasher safe. Wait till your friends are really plastered and then begin to pour beer from an actual beer bottle into this mug, and it forms the shape of an upside beer bottle – their heads will explode or they will pass out. Either way, you will be the ultimate party trickster with this optical illusion beer mug.

If you’re tired of drinking beer the old fashioned way – kegs, beer helmets, funnels, shotgun-style, or from a stupid plastic cup – be a sophisticated calico with this hip new drinking mug. Each upside down beer bottle glass holds 12 ounces of liquid refreshment. Great party favors, or gifts for a relative or friend who sees everything upside down.