A derogatory term used to describe any Hispanic typically Mexicans that jump a fence to cross the border into the US, but used by ignorant people to describe all Hispanics, when more proper terms can be used like wet back, mojo, beaner, my favorite gardener.
Boarder Patrol Agent 1: Look there are some wetback crossing.
Boarder Patrol Agent 2: We are in Arizona, here they are fence jumpers.
A person who is not of the gender you're normally attracted to whom you nonetheless find insanely attractive, i.e., someone you'd jump the fence for
Angelina Jolie is a fence jumper for straight women.
A illegal person from either mexico,cantral or south america
geroge lopez is a fence jumper
An illegal immigrant, more specifically
an illegal immigrant from mexico.
You fence jumpin landscaper, Go mow my lawn!
When you reference someone of Spanish origin.
Guy 1- "Dude my new neighbor is HOT!!
Guy 2- "Man your right, you didn't tell me she was a "Fence Jumper"
Guy 1 - "my new co-worker is a Fence Jumper"
A white man that prefers to date and have sex with black women.
Guy 1: you heard about Bob?
Guy 2: nah what happened?
Guy 1: he thinks the grass is greener on the other side.
Guy 2: huh?
Guy 1: he's a fence jumper.
Guy 2: ah yeah that's a shame.