v. To tweak the spelling or appearanece of something and change it to something else. Comes from changing the 1984 to 1981 on your drivers' licence so you can drink underage, like in the Mike Hines episode of 2000.
-'I can't get into the bar, I am too young.'
-'Give me your ID so I can give the motherfucker the scratch.'
The speed limit was too low so we gave the sign the scratch.