Speed Fluctuator 

A person who continuously changes the speed at which they drive regardless of the speed limit.

An example of a speed fluctuator would be someone driving on a 55 mph highway fluctuating their speed between 50 and 60 mph. This very annoying behavior makes it impossible for the poor person stuck behind them to use their cruise control.

Speed Fluctuator by Daren Hathaway January 7, 2009

speed of old 

The speed at which the elderly travel; this can be 5-10 miles under the speed limit whilst driving or just moving very slowly in front of you. It is a very frustrating phenomenon.

Aaaugh god dammit! Why won't she stop traveling at the speed of old! I've got stuff to do!

speed of old by domesticus July 17, 2010

Speed Gap 

The small, triangular air space located at the junction of a woman's thighs and pelvis. Speed gap is typically exhibited by voluptuous women and is not to be confused with the gap exhibited by slender or emaciated women.

Yo dawg, did you see Brad's mom's speed gap? I want to give that milf some atm action!

Yeah dawg, that slut's built for comfort. Somebody better be tappin' that ass.

Speed Gap by RandyAndy21 March 12, 2011

speed test 

Similar to the speed test used to test your internet connection, but this speed test is used to determine which checkout line is moving faster. It involves a snap judgment as to (1) which checkout clerk looks the least likely to encounter a situation in which they have to call the manager, and (2) which customers are least likely to have some sort of problem at checkout.

I used the speed test at Costco and got burned when the line I changed into was actually slower than the line I moved out of.

speed test by Ae5Ea8 April 5, 2015

speed rub 

When you masturbate as quick as possible by stroking your hand furiously and watching the porno two times the speed. You should be able to finish within 30 seconds.

Person 1: I am a speed rub WR holder of 15 seconds!

Person 2: I can do it in 6.

speed rub by NotoriousGWN July 17, 2016

speed burglar 

Someone who follows another driver who is speeding to prevent getting a ticket

Driver: hey lets follow the guy who just passed us
Passenger: Nah, he'll think you're a chicken shit speed burglar

speed burglar by Bduck1310 January 16, 2017

Speed Fap

What you do when watching porn and your mom is about to come in the room.

Guy 1: Hey, did you like that porno I showed you?
Guy 2: Yeah, but I had to speed fap because my mom said she was coming in.

Speed Fap by XXXPORN66642069 January 17, 2017