Top definition
Otherworldly, extraterrestrial and eccentric combined. A combination of cool and cool. Stellar. Groovy and pleasing; both aesthetically and mentally, and in the heart.
Brian, you're so extretessestric, your blue hair is cool.
by Funky Faux Falafel April 05, 2011
Get the merch
Get the Extretessestric neck gaiter and mug.