When you say pinkie do you mean pinkie rat or pinkie mouse? Depending on how big your BP is relative to the size of the pinkie prey item it may have just not needed to constrict it much in order to snarf it down. Are you sure what you saw "moving" wasn't just the normal ripples of a snake moving it's prey down it's body fully into it's body cavity area?

Congrats on acquiring your first BP. If you haven't had a chance to check out our caresheet here's a link to it.

http://www.ball-pythons.net/modules....warticle&id=52

Welcome to BPNet!