"overexcited or irrational, typically as a result of infatuation or excessive enthusiasm; mentally confused." Damn it! What IS that word!?— Duncan Jones (@ManMadeMoon) February 16, 2016
Fun fact: David Bowie won only one Grammy.
UPDATE: An irate reader points out that Queerty thinks Bowie's son was, in fact, gaga over Gaga's tribute. Extra thinks the tweet was at least cryptic. We'll see what he says when he invariably feels the need to clarify.