I assume derived from "chinny chin chin". To point out something said is a lie. A version of the saying for teenagers.
"Beard on tash with a little bit of mash" implies the lie is ludicrous. If less ludicrous you can use "Beard", "Beard on" or "Beard on tash".
All sayings must include a chin stroke.
Believe this comes from Portsmouth (Pompey) and surrounding areas of the South of UK.
Liar - "Alright mush, last night I smashed 20 birds"
Listener - "Beard on tash with a little bit of mash"
When a friend that is under 5 foot 3 daps up 1 person at the function and goes home to play PS5
Alex trimboli preformed the midget mash and dash before he dipped to play 2k
A person whos breath resembles that after sunday dinner smell
"Dont go near her, she has mash breath"
get on a drink and cocaine session in bebington
"mash a brew!"(excl.)
"do you wanna mash a brew tonight?"
"eh-up lads,are we mashin'?"
"I saw the lads earlier,and they'd defo mashed one"
What to call sex between two old people (30+) as the man is past his peak (rotten potatoes) and the woman is expired (rotten milk).
"Ew, I caught my grandparents doing the raunchy mashed potatoes!"
When you're unaware of your pregnancy and you still have sex.
"What the hell? I don't what happened to Jimmy, but he be looking like he got the mashed potato. Not sure what happened to him, but when he came out, he came out in pieces."
The "mashed potato ice cream cone effect" is a surprise feeling (often negative) when you eat or bite into one thing thinking it's something else that looks similar
I poured myself some salsa to have with my tortilla chips. It wasn't until the first chip that I realized it was spaghetti sauce in a salsa jar. I quickly learned the meaning of the mashed potato ice cream cone effect