A sentence that derived from racing meaning whatever won on the race day will have a increase in demands the day after.
Guy 1: why does mercedes win every race?
Guy 2: i don't know but what wins on sunday sells on monday man
by elongatedeel June 28, 2021
mugGet the what wins on sunday sells on mondaymug.

sell dog

One who fumbles/sells the bag, effectively killing the vibe-- One who messes up and other people have to suffer the consequences.
"Come on guy you didn't bring the carty*? You're being a sell dog."

*See also, "carty," a cannabis cartridge.
by bootyhandled January 11, 2022
mugGet the sell dogmug.

Sell Out

Sell Outs are people who used to have fun back in the day. Now they invest all their time playing video games such as animal crossing, catching fish like the rare blue gill.
Tyler, “Since when did Chris become such a sell out?? I broke up with him, I miss the old him and being porked so well by him.”
Mario, “You just need to move on already. It doesn’t seem like he’s interested in anything nowadays! I asked him to go on a vacation to California and he doesn’t want to go!!”
Tyler, “Wow, only sell outs deny vacations!”
by Minoy4667 April 11, 2020
mugGet the Sell Outmug.

Fake Sell

Verb. To get in on a bandwagon or join a fandom, and participate to a minimal degree dishonestly in order to promote or sell one's product, content or oneself in another area.
"Gina only bought a Warhammer model kit to farm the gamers on Insta for her Only Fans. What a fake sell!"
by Savage Bruski June 26, 2025
mugGet the Fake Sellmug.
Something that you buy once but sell twice therefore deems the item worthless. It’s one of the harshest insults you can give somebody.
I can buy you once but I can sell you twice
by Slangteam6 June 14, 2022
mugGet the I can buy you once but I can sell you twicemug.