The act of placing ones balls inside another participants anus and at the same time stroking themselves whilst whistling like a train.
Person 1: "All right bend over I'm gonna give you the Caboose!"
Person 2: "Please this is the fifth time this week!"
Person 1: "All Aboard!...Choo! Choo!"
Person 2: "Please this is the fifth time this week!"
Person 1: "All Aboard!...Choo! Choo!"
by benshapirohamburgerhelper September 8, 2021

A character in red vs blue, he is a member of the blue team. He is umm a loveable idiot. One of my favorite Characters, he cracks me up!
Agent Wash: Caboose toss that grenade. Caboose throws it. Wash: that was the worst throw ever, of all time. Michael J Caboose: not my fault someone put a wall in my way
by Hairy batman 117 April 7, 2021

When you hear the synth song that gets played at random times during YouTuber 3kliksphilip's videos. It's the same as the title of the song and it's made by his dad, Steventhedreamer.
by Techhead7890 March 2, 2024

by beatboxboy21 March 18, 2021

by BuffaloBono February 24, 2023
