1). something that is completley and utterly mind blowing, spectacular or just simply amazing.
2). the act of placing some type of sweet food (frosting, syrup, marshmallow fluff, etc.) before recieving a blow job.
Dave: "Yeah man we are getting threes kegs for the house tonight."
Mills: "SWEET DICK."
Jeff: "They call him sweet dick because he puts frosting on his penis before getting blow."