crossing over 

Genetics.
When genes croos over from.. UGH YOU WOULDN'T UNDERSTAND!

homoglobous chromosomes cross over

crossing over by AbsoluteR February 15, 2005

crossing the bridge 

A way to describe how high an individual is or will be after smoking weed or taking shrooms and or acid.

1) Dude, I've smoked soo much I feel like I'm crossing the bridge man.
2) Man I haven't smoked in a minute, can't wait to cross the bridge tonight.

crossing the bridge by Yaboiben November 6, 2015

Crossing the line 

When one decides it not fun being a good girl all the time, and gives in to sexual temptation. You can still convince yourself it's ok, if you dont cross all lines.

Yeah, I gave in after six years of being a good girl and went for it. Does that make me a bad person?

Crossing the line by donkey September 30, 2003

crossing swords 

When two males engage in unorthadox fucking by rubbing their dicks together.

Were you and Ryan engaged in sexual intercourse before his death?

Do you mean were we crossing swords?!

crossing swords by BlahBlahBla!! June 27, 2008

Crossing the Border 

To have intercourse with ones sexual partner with one leg up in the air.

Dude you look tired.
I know, I was up all night crossing the border.

Crossing the Border by StantheMan'08 January 23, 2008

Crossing Jordan 

A show on A&E about a female medical examiner in Boston, her name is Jordan Cavanah. Garrett, her boss, is a raging alcholic fatherly like figure to Jordan. Jordan Cavanah farts directly into her own vagina.

Me: Hey mom, watcha' watchin'?

Mom: Crossing Jordan.

Me: Why? All she does is fart directly into her vagina the whole fucking show aka bitch has a smelly fart pussy.

Crossing Jordan by The Blazin' AZN April 2, 2009

crossing the line 

v. showering with a man and then putting your mouth around his penis

I can admire a man's penis in the shower, but putting my mouth on it is crossing the line.

crossing the line by Yiping July 16, 2006