Lionel 

fatass

this guy is such a Lionel

Lionel by CMXI_Enjoyer September 3, 2023

Lionel 

A Lionel is someone who eats anything and doesn't vomit. They also might just throw rocks at birds.

Random Dude: "Hey! That guys eating a bunch of rocks and spitting them at birds!"
Smart person: "Yea he sure is a Lionel

Lionel by Search up Lionel on U.D. January 24, 2025

Lionel 

To describe immortality, greatness, something great, and many other positive things.

He can manage to solve all the problems by his own hands. What a Lionel.

Lionel by LionelWayne July 2, 2025

Lionel

Incredibly grumpy. Can never appreciate a joke and gets mad at the slightest teasing. When he gets mad, smoke comes out of his ears from his lungs, regenerating them. King of Grumps in Grumpsburg. Also unbelievably performative.

Lionel is sooooooo grumpy

Lionel by HamidSmither December 8, 2025

Lionel 

To describe greatness, awesomeness, and many other super positive things or matters that occur.

You managed to pass that super-hard exam? Wow! You’re such a Lionel.

Lionel by Capur August 2, 2025

Lionel Migration 

stupid ass definition that comes up 50% of the time you hit the random button on UD

seriously, hit random a couple times

Lionel Migration

Lionel Migration by rockhard June 28, 2008

lionel mentality 

A model railroading expression generally used to describe unprototypical operations,extremely toy-like,a real far cry from reality.

I don't like his setup. I think he has lionel mentality.

lionel mentality by teh744 May 27, 2008