1 spec is something from runescape. A person with a dragon dagger would do a special attack and 1 hit KO you. That would be a 1 spec.
Nerd: Hey nub lets battle!
Person: Okay, stake: 1m
Nerd: I will 1 spec you noob! I stake phat!
Person: Okay, lets go..
( in the duel arena, the person 1 specs the nerd with his dds.)
Nerd: OMFG MY PHAT NOOOOOOOOO.
Person: Noob, I can 1 spec you any day.