Skintominute 

A skintominute is a unit of time that refers to more than 5 but less than 60 minutes. If person X says they'll be somewhere in 5 minutes, and they're notoriously unreliable, when person Y relays that to someone else they may say that that person X will arrive in 5 skintominutes - meaning they have communicated both what person X said whilst also implying this is a complete underestimation.

Oscar: "Alex said he'll be here in 10 minutes."
James: "10 Skintominutes?"
Oscar: "Yeah, so about 40 minutes

Skintominute by de Broglie January 14, 2020

Skintminted 

An expression to describe someone who claims to be skint all the time to avoid spending cash when they are actually minted.

Eg 1
James: Do you think Jeremy will want to come to the cinema?
Jacob: Yeah he will but he'll pull the whole skintminted routine.
James: That's true, he'll want to wait for orange wednesdays.

Eg 2
Jeremy: Dude, I'm gonna have to ask for some diesel money, really struggling for cash at the minute.
Isaac: *cough* skintminted *cough*
Jeremy: What did you say?!
Isaac: Nothing just clearing my throat.

Skintminted by jMiR March 2, 2010