Found at a Goodwill! In San Francisco, no less. After nearly 10 years of checking the glassware section at Goodwills all over the country, I finally found something. Says "Made in USA" on the bottom; looks like Daga to me.
Distinguishing Characteristics
"Alpha Omicron Pi 1982 Luau" screenprinted on the back
Tags
Tiki Mug Design
Droopy Tiki Mug Brown
in 23 collections
This mug is brown and is shaped like a tiki with a lined, droopy face, pointed small breasts, a long nose and eyes like semi-circles. It is very similar to a mug produced by OMC.