Some background on this comic:

Transcript (comic draft):

“Look at that… Man, in our day, Bernie, we could skeletonize a cow in less than two minutes.”

Transcript (commentary):

Just about every time I’ve heard or read anything about piranhas (as you might imagine, I’m drawn to the subject), it’s always mentioned how quickly a school of them can skeletonize a cow. I’m not sure why a cow is always the standard unit of measurement for this sort of thing, but pondering it eventually led to this cartoon.