adj. describing something awesome that is only possible under the influence of serious doping, like the kind Lance Armstrong did in the tour de france.
Frosty the Dopeman is a character created by Marc Zydiak in a song of the same name from his self-titled LP, first copyrighted in 1972 and later published in 1977 (Nirvana Records), given heavy airplay by Dr. Demento and included on the compilation "Dementia Royale" (Rhino Records 1980). This song has been much imitated ever since by everyone from school kids to rap artists with many different versions and videos of it viewable on Youtube.
Original version of Frosty the Dopeman viewable on Youtube (published by Cheryl Lynn).
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.