"Dice on Board"
"I <heart> Zuggtmoy"
"3d6 in order"
"D20 Rules"
"I paint my own minis"
"Save Or Die!"
"I <heart> Dungeons&Dragons"
also: "I <heart> D&D"
"I rolled six 18s, honest"
"The geek shall inherit the earth"
"+1 bastard"
"Greyhawk Lives"
"Natural 20 means I win"
"The kobold ate your baby"
"Keep on the Borderlands"
"I'd rather be gaming"
also: "I'd rather be playing D&D"
"Follow Me. I'm going to White Plume Mountain"
"Giants, Drow, now this?"
"Enlightenment can penetrate even the helm of iron -St. Cuthbert"
There has to be dozens of other common D&D phrases out there.