scratchback is a term similar to wetback. A scratchback is a mexican that tripped when trying tojump the fence and went underneath it and scratching their backs all to bat shit
Is the favorite sport of all male office employees, when due to the low volume of work, and the work policies on internet use, the only thing they can do is scratch their crouch, more specifically on the balls area.
A derogatory term referring to illegal alien from Latin America who, because s/he cannot swim, enters the U.S. by crawling under the fence, causing his/her back to get severely scratched.
Person 1 white trash: "Hey, Juan. Like, your Mom's a total wetback. They should deport y'all back to Mexico."
Person 2 (Hispanic respondent): "Actually, Billy Bob, you ignorant white trash racist pendejo, my Mom came from Guatemala and crawled under the fence carrying me. So, we're both scratch backs."
A person on mexican descent, who was so morbidly obese they could neither hop the border or make the swim. So they were forced to dig under the fence and scratched their back in the process.