The sexual act of performing fellatio and simultaneouslyjerking off two penii. This motion resembles that of a teradactyl in flight. Related to skiing, but arms are raised, and mouth is open.
I used to think that the teradactyl was extinct until Bruce, Dante, and I met up with that ho-bag Tina.
The significant other type that is highly protective of what she's got. She's not above a little flesh ripping (real or verbal), to make sure all other competition know he's taken
Teradactyl: a sex manuver in which, right before the male ejaculates, he brings the blanket over his shoulders and flaps his "wings" against the female.