The proper form for saying one likes an object or individual. The "E" sound is extended to convey more like of the object or individual. Also, an "ah" sound can be added before the word to show great emphasis and character.
1: Man 1: Did you see that female that just walked by?
Man 2: dece
Man 1: very dece
2: Swans A: What kind of beer is that?
Swans B: Ah, a PBR.
Swans A: Ah, dece.
A shortened for of the word decent or decently, but not necessarily with the same connotation. Can serve as a adjective (dece hot) or adverb (his shooting was dece), and can describe and/or modify both good and bad things. Often used in conjuction with the words "real" and "prime".
A) #1:What did you think of that concert last night?
#2:It was dece
B) #1:WOW, that girl is smokin'!
#2: Yeah, she's real dece.
C) #1:You guys lost pretty bad in that gamelast night.
#2:Yeah, we got dece raped.
D) #1:I want to ask her out, her bod is real dece prime.
E) #1:I dece want to go to that party tonight