On Papa Gilles

On Papa Gilles is a phrase which is a way of saying that someone is telling the truth. Similar to another phrase such as “on my mom”. But the difference lies, and the fact that you have to tell the truth when saying this, if you do not Papa Gilles dies and you are kicked out of the friend group/never trusted again

Person 1: Dude they gave me a large fry for free. Person 2: Say on Papa Gilles
Person 1: I can’t
Person 2: Ok, so you lied