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thumbs-diagonal

Somewhat better than "thumbs-horizontal" --- i.e., where you don't know "one way or da other" or " whether it's a 'ding' or 'buzz'" --- in dat you think you've got a better-than-fifty-fifty chance of a positive outcome, but cannot be sure enough yet to do da Fonzie-gesture.
My buddy asked me to run in da store to ask if they were giving out free calendars this year; da clerk said dat they might be, but hadn't heard for sure yet, so I came out and gave my friend a thumbs-diagonal sign.
thumbs-diagonal by QuacksO November 8, 2025

diagonalize 

to cross two or more intersecting streets in one direct nonstop path while avoiding contact with all intermediate corners.
See hypotenuse-tionanal-ize.
"There is no traffic in any direction at this intersection, it is appropriate to diagonalize" yelled Jane to her friend on the far corner.
diagonalize by MikeS August 15, 2006

Diagonalizability

just take its fucking diagonal matrix
-Yo, did you review Diagonalizability for our Linear final?

- Diagowho?
Diagonalizability by selim5 June 7, 2018

Fuck Me Diagonally 

similar to 'fuck me sideways' but with a harsher meaning and used often to describe something so fucked up and outrageous it's not even funny. also a california shit bitch
doctor- "your wife is pregnant with twins who both have AIDS."

you- "Fuck Me!"

doctor- "you didn't let me finish. you also have AIDS."

you- "FUCK ME DIAGONALLY!!!!"

diagonaling 

A sexual act. The man and woman are in what would appear to be missionary position, but their heads are rotated around 45 degrees with the axis at their genital connection.
Aw, man, I tried diagonaling with Alice last night. It was an amazing sensation.

Diagonalation 

The act of an object projected into a diagonal movement.
The diagonalation of the spacecraft caused it to go off course and burn up upon re-entry of Earth's Atmosphere.
Diagonalation by Spud Bizzle September 15, 2009