Thanks for your reply, A ZombieTwinkie. I just retried following your advice, and I did find it. It was at the left bottom corner of the map. But that's very strange I never had the opportunity to see it before, as the exit has flashy colors. Very strange...
Anyway, I now have finished every mission, but I still miss one accessories to finish the game at 100%, but don't know where's it at. I only know it's the number 33 I'm missing, the one between the mustache (#32) and the ass head (#34).
Does anyone know, please? Thanks.