The British Isles apparently aren't big enough for two altruistic acts.

Last night, on the third night of a weeklong residency on the Late Show With David Letterman, U2's The Edge proved that the No. 1 reason to read out the Top 10 list is the opportunity to call out a fellow righteous rocker, going off the teleprompter script to smack down lovingly reference tantric musicman Sting.

In addition to improving tenfold the original joke, The Edge's appropriately edgy ad lib also earned the approval of Letterman himself, who told the rocker during the obligatory handshake portion of the segment, "Very funny."

"I like that!" he announced after the barb.

Sting, on the other hand, might not. Though Chris Martin is no doubt thankful for the reprieve.