In the sport of roller derby, at the end of a jam, when a player skates back to the bench and can't remember a single thing that just happened on the track. Caused by a combination of nerves, adrenaline, overload of quick, in-the-moment decision-making and whatever you call that thing your brain does where it represses things that are painful.

"WTF just happened out there? I have wicked jamnesia! Who got lead jammer? Why is our jammer in the box? Did I do anything good? Who was my partner? HEELLPPP!?"

jamnesia by KittyT March 12, 2011

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Jamnesia

When you can't remember the name of a song or band

"What was that song called?...Fuck! I think I have jamnesia

Jamnesia by Jake5422 August 29, 2015

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Jamnesia

When you forget what you jam is called.

Partyguy #1: What's my jam called again. Oh yeah, Fantasy that shit's my JAM!1

Partyguy #2: You forgot your jam?

Partyguy# 1: I have jamnesia.

Jamnesia by Morgan Freeman's evil Piñata. September 16, 2015

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Jamnesia

When you had a cool idea while jamming but can’t remember what you actually played.

“Dude what was that riff you played a couple minutes ago? That was sick”

“Shit, I have jamnesia. Oh well, woulda been a great song though.”

Jamnesia by Raccoonsrfriends August 12, 2021

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jamnesia

A condition in which the excitement of opening a new jar of jam quickly fades, causing the previous ones to be forgotten and left to languish in the back of the fridge. Characterized by the gradual accumulation of half-used jars as novelty outpaces consumption.

jamnesic (adj.) prone to forgetting about old jams hiding in the back of the fridge.

I found three jars of raspberry jam from last year, classic jamnesia.

jamnesia by Dyske November 7, 2025

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