Sex line 

Sex line: a pickup line so good that it gets you laid.

A classic 'sex line' example:

John: I wish I was one of your tears!
Susan: Why is that?
John: So I could start in your eyes, live on your face and die on your lips!
Susan: Your place or mine?

Sex line by supanover_ek_sez October 15, 2010

Male sex line 

The lines on ur abs that point to ur dong

Sangminos male sex lines were like bam...

Male sex line by jazojigga May 20, 2016

conga line butt sex 

A conga line consisting of several naked males, where the kicking motion is substituted with a penile thrust into the rectum of the person in front of him. Females can join in too, but require a strap-on dildo.

Conga line butt sex! Cha, cha, cha, cha, cha! *THRUST!*

conga line butt sex by Zaenos January 6, 2007

sex lines 

Indentations in the hips caused through muscular definition in the torso. When a person is wearing low-riding pants, the indents look like two lines pointing down to the genitals in a "V" like shape.

Steve only wears his pants like that because he wants to show off his sex lines.

sex lines by jonjon84 June 26, 2006

sex lines 

the beautiful markings cut into the flesh on the lower abdomen of a fit male (or an extremely fit female).

They can be found on people such as Pete Wentz, Usher, and Kelly Clarkson.

He removed his shirt and when i saw his lovely set of sex lines, I pounced on him.

sex lines by Shelby Renee July 24, 2008