wrong foot / deep yogurt

be off on the wrong foot - iniciar algo debaixo de más circunstâncias, começar com o “pé esquerdo”

be in deep yogurt (col.) - estar em dificuldade

"I would like to make a deal but I think we are off on the wrong foot already."

"Right now I think we are in deep yogurt." 

MINI DICIONÁRIO de idioms, phrasal verbs e mais (Wright and Cruz)