ice from sky

An unusual thing happened last friday here on the ranch.
A frozen ice missile plummeted to the ground and embedded itself about 6 inches in the ground. I descibed it as pumpkin-sized and would have certainly been the end of anyone unlucky enough to be under it.
The thories abounded. Was it a meteor? Was it a large piece of hail?
Did it come off a plane? Or was it a tragic Slurpee malfunction? We may never know.
We're just glad we could laugh about it and not cry about this thing really ruining somebody's day.