The act of mashing ones flaccid penis into a females butt-hole until said penis slithers in like a dragon.
I couldn't get hard last night so I had to give her the ol' Dirt Dragon.
by Mr. Shame February 02, 2013
The dry, scale like skin a man acquires on his penis from chaffing due to anal sex without lube.
Man, I got the Dirt Dragon from that girl last night, I should have used lube
by AkaMV February 02, 2013