For those interested in the meaning of the word "blasphemy" according to the Catholic faith, here are all the answers:
CATHOLIC ENCYCLOPEDIA: Blasphemy
If this guy goes to confesion, probably he would get a reprimand, he will be asked to promise not to do it again and he will also be given a light penance.... possibly to say 10 times the "Hail Mary"....
I remember that one year at my convent school some girls dressed up a religious image of a saint (I can't remember which one) with one of our uniforms to celebrate the end of the school year. The nuns were furious, but they were never able to catch the culprits. We all knew who they were, but we honoured the "law of silence". And this used to happen quite frequently in good Catholic schools....