In Brazil, it's common (and funny) to use what we call "Gírias Idosas", which means some words or expressions used for elderly people.
It would be interesting to have a stamp pack with these expressions. Examples (in Portuguese):
  • Supimpa
  • Batuta
  • Arrebentar a boca do balão
  • Do balacobaco
  • Pitel
  • Qual sua graça?
  • Borocoxô
  • Serelepe
  • Traquinas
  • Xuxu beleza
  • Chato de galocha