Switch Mack 

When you're macking on a chick for awhile and then get introduced to her hotter friend/co-worker/neighbor/sister. You then decide to go for the other chick instead, switch mack style.

man, I was out at the bar last night and was macking on this cute chick, only to be introduced to her tasty roommate later in the evening. I pulled a switch mack on that shit and ended up hooking up with the roommate.

Switch Mack by sprhny October 28, 2010

san francisco switchback 

A sequential act of analingus between two men.

After Kevin tossed Christian's salad, Christian reciprocated with the ol'San Francisco Switchback.

san francisco switchback by Reggie McNickles December 12, 2007

Switchback Side 

The act of master bating backward on a toilet.

During 4H Exploration Days we caught Luke preforming a switchback side in the dorms. What a sight!

Switchback Side by Patt7298 April 15, 2020

double one-way switchback 

A street layout phenomenon occuring in driving, where a motorist unfamiliar with an area encounters two one-way streets in succession, forcing the course of the car away from the destination, or back to the location where the impasse was first noticed. A triple one-way switchback involves three one-way streets and produces the same results.

Bill kept driving away from where he wanted to go. The neighborhood was a maze of double one-way switchbacks.

double one-way switchback by Nick Estes April 9, 2006

Arkansas Switchback 

When two opposite gender siblings are having sex in the doggystyle posistion, the male pulls the sisters head as far around as possible and spits in her mouth while still inside her. Both sibling must be native Arkansas residents.

While on a camping trip in arkansas, three friends decided to pay 30 dollars a person to see a sibling fuck show. During the show one of the viewers asked if the man and woman could prove they were siblings. While fucking the woman from behind the man laughed and replied, "you just watch how I spit her mouth",(he yanks her head around and preceedes to spit into her mouth),"up round these parts we call that the Arkansas Switchback, and thats all the proof we need."
.......Actually a true Story!

Arkansas Switchback by Ben B. September 8, 2006

switchback sally 

The act of defficating into a woman's vagina while she twists her partners nipples

"tim couldnt wait to go home and unload a switchback sally on his wife"

switchback sally by usain bolty February 24, 2009

Switchback 

A sled made by Polaris. Made for boondocking.

Man did you see that Switchback boondocking off trail back there?

Switchback by Polarisking December 29, 2009