When a girl wants to have a foursome with 3 guys, but she can't decide who to pleasure first. The 3 guys then proceed to stand up next to each other. The girl gets on her knees, then gives the middle man a blowjob, while she jacks off the other two. The in and out motion of her head and arms resemble a pteradactyl.
Tom: Jenny gave the pterodactyl to those 3 guys at the party!

Don: Slut.
by BAD COBRA July 21, 2006
Background: Snoop's song "step yo game up" ..at the end it was a little confusing to figure out what he was saying.
Mike convinced Jessica that it is a sex position.
Definition: When a girl is on her back with her legs spread open like a pterodactyl and the guy is fucking her with his backside facing her and as they are fucking her legs flap like a pterodactyl. It ads more force and depth to the penetration. Screeching is optional..but recommended.
by fuck me sideways mike ;) April 21, 2005

From the missionary position, about to cum a man pulls out and pins the women's arms down with his knees then sprays her face with cum. Her thrashing head and pinned arms resemble a pterodactyl in flight. Her screams add to the effect.
Jen was a real dead fish last night so I gave her the pterodactyl to wake her ass up.
by King Bong Carlos July 16, 2009
I dont know why all of you on her are nasty, but a pterodactyl is a dinosaur.
What did you do your science project on?
I wrote about pterodactyls.
by mrs.curtis April 17, 2015
When a woman performs oral sex on a man in front of her, while at the same time is giving hand jobs to men on her right and left. The resulting motion looks like she is attempting to fly. (Much like a pterodactyl.)
Wow, she really gives a terrific pterodactyl!
by somebody111 June 23, 2006
The art of giving two handjobs and one blowjob at once via a rhythmic motion that resembles the flight of a Pterodactyl. It was perfected by Tara in Berkeley.
Tara was late for dinner because she had to finish pterodactyling.
by Sarcophilus harrisii February 2, 2009
In a bathroom stall, one grabs the tops of the walls and places one foot over each wall. One then proceeds to defecate from approximately 5 feet above the toilet, while mimicking the cry of a Pterodactyl.
I didn't want to touch that toilet seat, so I decided to Pterodactyl it instead.
by TurtlesofThought April 16, 2009