Wiktionary
adv. (context idiomatic informal English) why; why is it; for what reason or purpose?
WordNet
adv. question word; what is the reason (`how come' is a nonstandard variant); "why are you here?"; "how come he got an ice cream cone but I didn't?" [syn: why]
Wikipedia
"How Come" is a song by the American rap group D12. It was released in June 2004 as the second single from their second album D12 World. The song was certified Gold by the RIAA.
How Come is a song co-written by Ronnie Lane and Kevin Westlake, and recorded by Lane as his first single in 1973 after he left The Faces. Featuring a band of constantly changing personnel called Slim Chance, including Benny Gallagher and Graham Lyle, who later had considerable success as a performing and songwriting duo in their own right, it reached No. 11 in the UK.
Gallagher played piano accordion and Lyle mandolin on the A-side, both also contributing back-up vocals. "Done This One Before", on the B-side, featured Gallagher on Hammond organ and Lyle on harmonica.
In 1996 the song was used as the first track of The Pogues seventh and last studio album Pogue Mahone.
Category:1973 singles Category:Songs written by Ronnie Lane
Usage examples of "how come".
And after that I'd be in the rubber room, inside gazing out, and knowing exactly how come I was there.
If it's the Republicans who elevate ideology over reality, how come it's always the Democrats who are being floored by reality?