Ledge-Bomb

Noun/
A combination of the words 'legend' and 'bomb'. Meaning an ultimatum, generally used to describe a figuratively explosive legend.

Famous ledge-bombs include:

Zack De La Rocha
Freddie Mercury
Nelson Mandela

Definitely not ledge-bombs:
Kim Jong-Un
Osama Bin-Laden
Josef Stalin
David Cameron

In speech:
Dave: Mike just lent me a fiver and said I don't need to pay him back
Davros: Yeah, Mike's a ledge-bomb