Great song to drag one's ass back to work after lunch.
It is also a great song to hear Keith Moon's artistry.
Observe how he skips one beat after another till he's so far behind the rest of the band that to catch up with them during the chorus, he has no choice but to grind out this super-condensed, furious roll-pattern. It is classic Keith Moon, a style that is used on several Who songs and it is one that sounds very "satisfying" (to me.) I suspect it is because unlike a drummer playing in a 2-guitar band, he doesn't play mere rhythm. Instead, he plays it like a "lead" instrument, as if he is playing a melody. So much so that anytime I hear a Who song now, I find myself mesmerized by Moon's rhythmic mathematics. There is always a dangerous moment in some of the Who's songs that suggest a loss of control (even if it occurs for a tiny fraction of a second.) Somehow, Moon the Loon ties it all together.
Why am I, a guitar lover, talking about drummers?