Once again, Jimmy Fallon has forced us to Google a sports thing. As we’re sure about 90 percent of the United States already knows, someone named Peyton Manning has signed with the Denver Broncos, leaving “Muscular Christian” and temporary pop-culture sensation Tim Tebow high and dry and likely to get traded. (Did we get that right?) To commemorate this turn of events, Fallon reprised his Tebowie character — yes, that’s Tebow mashed up with David Bowie — for an incredibly appropriate “Ziggy Stardust” parody tracing the quarterback’s rise and fall. We’re not even going to quote any of the lyrics because they’re too good to ruin. Just watch it, OK?