I've done Christmas Karaoke round friends houses when everyone is totally smashed at very silly O Clock. It's a real hoot, that's why people love it. Down the road there's even a pub that have a regular Kurryoke Night! And with reference to the constant 'English insecurity' threads that do the rounds here, not only is it IMO an example of ongoing 'folk process' or wotnot, it also sounds to me quite the most Englishy innovation imaginable.. Gotta love the bastard children of English culture.