How do you say "You forgot to pay!"

Question

I am trying to do a conversation in spanish and we are all a little confused! How do you say "You forgot to pay!" and also, how do you say "Goodbye, sucker!" kind of like youare making fun of someone.... Thanks! Paz, Rebeca, y Maya

Answer 1

¡Olvidaste pagar! means "You forgot to pay!" Can't help with the other one though... unless you wanted to say, "Goodbye, loser!" then it would be "¡Adios, perdedor!"