Lead Mong 

Dog owner who walks their dog on a lead in an area were it's very common for dogs to be off lead (dog park, large fields, woods)

Lead Mongs are often poor dog owners often walking nervous or aggressive dog displaying weak body language the dog picks up on.

We got to lead him for a second there is a lead Mong ahead.

Lead Mong by HiggsHighway March 5, 2021

Leadmongering 

The act of standing in front of another player in a first-person shooter game to shield them from enemy fire. It is mainly used to guard somebody as they accomplish an objective of some sort such as defusing an explosive or carrying the flag in 'capture the flag' games. Also known as meatshielding(though 'meatshield' implies that the guard is being used against his will)

His teammate was leadmongering the whole time!

Leadmongering by LaserPhaser June 28, 2010