A French expression derived from the saying young
people use "il a des dettes et des sous" which means "he has debts and cash". Mixing debts and cash, came detsou.
Without the
money aspect, it is now used to describe someone who'
s legendary for its ability to play games and mindfuck its entourage, strangers and even animals if he wanted to.
"Joue pas au Loup-Garou avec ce type, c'est un putain de Detsou."
"
Don't
play Mafia with that guy, that's a freacking Detsou."