Time machine sex 

Someone you would have fucked 20 years ago but you wouldn't now

Janet is time machine sex,I would have loved to fuck her years ago but she's old fat and lumpy now

Time machine sex by G dogo April 3, 2022

Machine gun sex

Machine gun sex is characterized by violent, rapid, repeated thrusts.

Susie was suffering from exhaustion, after a marathon of bout of machine gun sex!

Machine gun sex by I, Wreckerrr October 14, 2016

Booty nigga sex machine 

a black nigger boy with a fat ass that has a huge sex drive

“My cousin is a booty nigga sex machine”

Booty nigga sex machine by weixvason May 27, 2019

sex machine 

1.) a person that can go on having sex for interminable amounts of time on end
2.) someone whom the women love and always want to have sex with
3.) me

mmm jack. You are such a sex machine. I wanna have sex with you all the time. Please eat me out and suck my tits. Can I give you a blowjob? Please have sex with me.

sex machine by jack January 25, 2004

sex-machine 

a machine used to get a woman off. Usually has a dildo on the end of it.

I knew becky was a freak when I saw her sex machine.

sex-machine by KroSS October 7, 2004

German sex-machine 

a very hot girl with a german name, usually thought of as having sex all of the time

Dude, the German sex-machine is sooo hot today, I wanna hit that!

German sex-machine by bobbyjoechris December 28, 2004

Serbian Sex Machine

Often also named Stefan, Morry or Mandy.

That Serbian Sex Machine Mandy knows how to give good D

Serbian Sex Machine by the Asset June 26, 2014