gumdrops and unicorns 

Elusive fantasies. Things that one wants but can't quite attain. Often things of a darker nature (sex, drugs, rock & roll, etc.). An unlikely occurrence that would greatly please the recipient.

For example, in reference to the probability of Geek # 1's fantasy of all the cheerleaders showing up at his door naked with a keg of Bud Light right now; "It's all just gumdrops and unicorns, man."

gumdrops and unicorns by Desertgrrrl April 12, 2014