A sexual act in which the customer lays under a glass coffeetable and looks up through it, while their partner defecates on the top. How some people find this stimulating I'll never know.

Also can refer to the same positioning with a coffee table but the person on top merely presses their genitals onto the glass, for "squashed" visual effect - or can refer to defecating onto someone's face which has been first covered in plastic kitchen wrap like Saran Wrap.
Your grandfather got arrested in Thailand again after paying an underage transvestite hooker for some ]glass bottom boat] action.
viết bởi Frank667788 21 Tháng tám, 2006
Defecating on saran wrap that's held over your partner's face
After dinner my partner treated me to a glass bottom boat ride.
viết bởi Jizzle 18 Tháng ba, 2003
latin: Traba crystalis

In this perfect addition to foreplay, one partner lies beneath a glass coffee table while the other squats above it and unloads. Like viewing the colorful sea life from the relative safety and serenity of a glass-bottom boat, this simple maneuver is not only arousing but biologically tantalizing.
I've been to Hawaii. I've seen all of those fish---its what every tourist does. It's neat and all, but never blew me away. But getting to see my Bobby in action, doing that Glass-bottom boat for me, seeing that magical human process going on in front of me . . .well, I just felt like a science student all over again.
viết bởi Dirty Buck Nasty 29 Tháng ba, 2010
When a person shits on on top of a glass table, while someone under neath masturbates to it. like as you would watch fish in a real glass bottom boat.
Kelly did a glass bottom boat for me while i jacked off. She's such a freak!
viết bởi systemcontrol 18 Tháng một, 2010
A person lies underneath a glass table while another person deficates on top of the table.
At the party Luke was a passenger on a glass-bottom boat.
viết bởi Al Tonen 05 Tháng tư, 2004
A sexual act that involves a person squatting and defecating on a glass table while another watches from below.
John paid the hooker for a glass-bottom boat but I had to clean it up.
viết bởi MeowMeow master 11 Tháng ba, 2010
Jerking off underneath a glass coffee table while some slut drops trow and shits over you, onto the table.
viết bởi Talking Goat 20 Tháng sáu, 2003

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