Girl-Watching

In the years I’ve been at this (Lots, not to be precise) You’d think that once or twice At least I would have seen Some anomalies. I mean Some major ones. As in Not feet but little wheels, Or crests like cockatiels’. Where are they keeping the girls With a chrome exterior, Or an extra derriere? Apparently nowhere. Assuming my sample’s valid, The pool is limited To the standard types I’ve tallied; Such variance as there is In the usual congeries Of   physiognomies — And yet enough of   it To be worth the looking at. The walking by, for that, Of   the same girl over and over Would be no cross to bear If   it were that one there.