Metalchick 

This word is quite often used as a female form of Metalhead (although metalhead's can be female)

A true metalchick dresses in a similar way to a male metalhead. I.e - tight, faded jeans, band t-shirts(usually in skinny fit) some piercings or tattoos, and some jewelery. This type of Metalchick tends to dig Metallica, Machine Head, Slayer.....etc.

Some Metalchicks may dress more like girls are 'supposed' to. I.e - very tight pants(usually leather or pvc) tight/revealing tops, and big fluffy hair. This look is favoured by girls who like bands like Motley Crue, Kiss and Van Halen.

JAMES: "Dude, check out that metalchick!"
CHRIS: "She's hardcore man"
Or
JOSH: "Dude, check out that metalchick"
ROBERT: "Man, she looks like the lead singer from Motley Crue, I wanna fuck her"

Metalchick by Georgia June 24, 2004

Metalorism 

The relative ability to consume alcohol and process it effectively. A high metalorism means one possesses the ability to consume large quantities of alcohol at a time and not suffer certain disabilities: e.g., drunkeness, hangovers.

"Red's metalorism is incredibly high-- he just did six shots and is still standing!"

Metalorism by Michael Kleiner October 15, 2006

Timelord metacrisis

In doctor who, the doctor gets his hand cut off, then keeps the hand til he needs it and embews his regeneration energy into it and when Donna noble almost dies she touches the severed hand and becomes the doctor donna and has a timelord meta crisis and then when she has a kid part of the meta crisis passes down to her kid

timelord metacrisis is a thing where a human has half time lord energy in their head

Timelord metacrisis by AstrDynamite November 26, 2023