The pterodactyl
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When a girl wants to have a [foursome] with 3 guys, but she cant 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].
The pterodactyl meaning & definition 1 of The pterodactyl.