The kid that was frequently a row or two in front of me used to make silly faces... Ever get "The Look", from the Priest, when he catches you, making silly faces BACK at the kid?
I don't know - my son was baptized last year on the first Sunday of Great Lent, but I was surprised at the time because I had some notion that this was the rule. I did not ask questions, though, because I was just thrilled to have him in the church!
My former priest sometimes baptized people on Lazarus Saturday instead of waiting til Holy Saturday so that they could experience Holy Week within the Church.