leavittitis 

The disease that anyone with the last name Leavitt is prone to leaving the milk out when eating a bowl of cereal and letting the milk become warm and develops a condensation coat rather than putting the milk back in the fridge.

Gary always leaves the milk out, I think he has Leavittitis

leavittitis by Randy Leavitt May 16, 2020

leavittation 

a rock climbing technique for climbing wides cracks (4 inches to 8 inches wide, aka "off-widths") developed in the late 1970's and early 1980's by climbers Randy Leavitt and Tony Yaniro.

The rock climber used leavittation to negotiate the off-width crack.

leavittation by rock climber February 5, 2010

Leavittation 

1. The act of using incredibly poor judgement and trying to be humorous too soon to a tragic event. Typically a long-term symptom of poor parenting resulting in a total lack of common sense and dignity.

2. The use of self-indulgent dark humor via social media in a desperate attempt to draw attention to your miserable existence.

Person A: Did you hear about that bombing at the Ariana Grande concert? How terrible.
Person B: Yeah, that dude really wanted to nail her, didn't he?
Person A: Dude, stop it. That is some serious Leavittation you got going on.

Leavittation by Jose Frijoles May 23, 2017