let's burn a blue

American slang talk for smoking little blue pain pills.

Guy# 1: Hey man... let's burn a blue!
Guy#2: No thanks...I only burn green.

Let the beat stay

What you tell your friends when you're drunk and convinced you're the life of the party but their trying to get you to go home.

Tim: hey lets get the bill and get you home
Krista: Don't let the beat drop... let the beat stay!
Tim: Avoids eye contact

Let's go! Fortnite!

When something pure mazza happens.

"Lad, I just shegreed this bloke." "Let's go! Fortnite!"

Let Down Blizzard

When you send a friend to get blizzards from Dairy Queen and they are out of your flavor, so the friend chooses a flavor for you.

Rob: "Hey, they were out of caramel cheesecake, so I got you Oreo."
Lee: "Damn, a let down blizzard."

Let the window up

Roll the window up.

You wanna put some glass in that window?
You wanna let the window up?

Let's do a John

when you just want to do fuckall so you avoid work at all cost

- "Let's do a John" - said my coworker
- "I've been fired for that." - thats me.

letting God choose

Slapping the screen in Kahoot because you don't know the answer.

I dunno what this one is, I'll just go with letting God choose.