This mug is being used at Red Robin restaurants to serve a decent Mai Tai. Or, what they call a "Tropical Mai Tai".
Distinguishing Characteristics
small chips on inside around rim
Collector Gallery
Tiki Mug Design
Glass Two-Faced Tiki Short Clear
in 106 collections
Common two-faced glass with smiling face on one side, angry on the other. This is the most common version, short and clear, without markings.