Ask a grandmother how a (or many) bb(s) gets into anything (pudding, pie, milk jug, gas tank). More than likely, she will have two generations of hijinks to talk about. From furniture with missing legs and corners to stair banisters disassembled to remove kids, my mother and grandmothers had seen a lot. I wonder how we all became adults, much less with all our pieces parts.
The parents (however justified in anger) should be grateful they only lost a pump.