2) Common term for a drug used to render victims unconscious or incapacitated; typically used by males from college fraternities to rape female(or possibly male) victims because they, the frat kids, can't any poontang any other way due to their lack of basic social skills, idiocy or missing chromosomes.
"Dude, I think Brad's finally gonna get some tonight!" said Chad
"Why do you say that, dude?" asked Ted
"He totally slipped a roofie in that blonde chick's drink!" replied Chad
"Dude! Awesome! Delta Delta Delta!! Wooo!" hollered Ted.