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1. trainal
noun. To form a line in which everyone humps the person in front of them. This can be done with either all guys or a female with a strap-on between each male.
Yo bitch, Our guests are hear, let's have trainal.
by yohan Nov 14, 2004 add a video
2. trainal
A Long line Of People Giving anal and moving at the same time
"holy Shit Look At That Massive Trainal"
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