adj. When you are bored and decide to analyze your surroundings to find something interesting and you see a girl or guy sneek a scratch. Preferably itching their crotch, boob, or butt.
by LolaChristineArmando. April 4, 2011

When you're all in on Bitcoin and save small sums of fiat from your day job to invest in Bitcoin's price pullbacks.
by Bitcoiner123 November 21, 2019

A.k.a. "courtesy scratch"; it involves your helpfully scratching someone's back in a spot where he has difficulty reaching himself.
Giving someone a supplementary scratch is indeed a very nice gesture, but da prob is dat you cannot know where it itches on your friend's back, and so you may hafta do a good bit of "up/down-left/right" trial-and-error scratching till you finally hit da right spot.
by QuacksO July 25, 2019

by tadoefan1223 December 29, 2021

by hotscratch82 May 10, 2010

A positively evil and cunning man who did everything in his power to destroy the legendary BAU. Any who believe Alvez should’ve saved him are wrong.
“Mr Scratch waged war against the BAU” - Rossi s12e14
“Scratch got deeper into my head than I care to admit, and the only way I was able to stay sane was by repeating a mantra, two words” - Prentiss s13e1
“Scratch got deeper into my head than I care to admit, and the only way I was able to stay sane was by repeating a mantra, two words” - Prentiss s13e1
by ruredusecotw February 3, 2021

A man returned from a drunken and chemically facilitated night out on the wrong side of the tracks. Another man, upon seeing our hero's return, quipped: "he's been scratching the underside".
by Bakelite October 2, 2012
