The Merry-Go-Round 

A term used for sex. The sex partner, male or female, sits on top of the other partner's penis, or horse, and goes up and down on it.

Female: "I'm wanna ride The Merry-Go-Round. ;)"
Male: "Oh Yeah. Enjoy the ride!;)"

The Merry-Go-Round by Crop Dusting June 26, 2014

the merry-go-round sing-along 

The Merry-Go-Round Sing-Along is a rare, and insanely difficult sex move. To complete successfully, one must first be male. Next, you must obtain one female sex partner. (Does not matter occupation, just female.) Both of you must get entirely naked, and she must sit on your lap, legs splayed. Do this in front of a television, and turn the channel to a kids' signing channel, and have your bitch sing to that song, in tune to the music, and give you a physical lapdance at once.

(Aliases: Merry, MGR, Mary, Spinner)

Jake: Dude, I just had the merry-go-round sing-along with Kate!
John: WHOA that's hot.
Kate: You're a douchebag Jake! We're over.

the merry-go-round sing-along by Ricken the Faggot Mage October 13, 2013

Riding the merry-go-round 

Riding the merry-go-round* is when a woman seeks to secure a handsome, perhaps wealthy, emotionally unavailable man ("Chad"*) in an attempt to improve social standing (hypergamy), gets dumped, and then she tries again, repeating the cycle. She never learns, all while ignoring guys she has friend-zoned.

After perpetually riding the merry-go-round, the woman eventually finds herself past the flower of her youth, single, and whining on TikTok videos about how "there aren't any good men".

*terms often used by men's advice YouTubers "33 Secrets" and "Entrepreneurs in Cars".

She would do well to stop Riding the Merry-Go-Round and settle down with someone she has friend-zoned.

Riding the merry-go-round by Run.Forrest.Run January 26, 2022

The Multi-cultural Merry-go-Round 

The Multi-cultural Merry-go-Round is when a guy sits in the center of your local kindergarten playground's merry-go-round while one of each female race stands around the circle naked and bends over ass facing inwards. The merry-go-round is then spun, which gives the man in the center a 360 degree view of all the asses around the world.

"Dude, my girlfriend let me ride the multi-cultural merry-go-round last night and I've never been the same!"

The Multi-cultural Merry-go-Round by Binkinater November 14, 2018