When a man is fornicating with a woman, and his thrust is so intense that his penis exits the vagina and is inserted into the woman's anus.
Man 1: Dude, I was banging Shelly too hard, and I accidentally got my dick in her pooper.

Man 2: Oh yeah, the high speed lane change. You gotta be careful not to cause wreckage.
by laineDdednaHdeR June 9, 2021
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The act of pulling ones penis out of a vagina then immediatly inserting it into the anus or vice versa. This process is then repeated over and over again.
Mel couldn't walk for 2 days after mike had frequently been changing lanes on her
by dudebra April 8, 2008
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When you try to pass a slow moving car by switching lanes only to find there is another car going slower, then you get back behind the previous car.
I had to do a Same Lane Shame Change after I tried passing the old lady in the POV then ended up behind a mini van.
by mdub783 July 19, 2014
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It's when a man goes from the vagina to the anus in one quick motion without warning his partner.
I was changing lanes without signaling on Renee in the shower and she went deaf for a minute.
by intelinside August 5, 2010
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Whilst having penetrative vaginal intercourse with a woman, usually with her on all fours in the "doggy" position, a man might suddenly transfer his penis from to her anus, without warning the woman of this sudden change. The woman's reaction is usually like that of other motorists when a driver swerves into another lan on the road without indicating: she honks loudly and attempts to stop.
"I was going away busily at this woman who was a bit loose, so I decided to take my chance, and changed lanes without indicating. You could have heard her yell in Sacramento, but boy, was she tighter there."
by Anonymous October 9, 2003
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When you go from vaginal sex to anal sex without warning the girl. Must be done in a quick fashion.
Jake : Hey did you end up changing lanes without using your signal on that chick last nite?

Steve : yes sir. she said she didnt like anal but she got it anyways.
by switchbladejake August 18, 2008
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When you go into a bathroom to take a leak and all the sudden you have to take a shit and move from the urinal to a stall.
Man, yesterday I was at the urinal taking a piss and my stomach got all tore up and I had to take a shit . I had to zip up and hit the stall.

Oh, so you did a bathroom lane change.
by joemanshowman March 3, 2018
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