I knew a flutist in college who could out-double-tongue anyone. Said it was 'cause she grew up on a farm calling the cats--"Here kittykittykittykitty...."
1975 Gemeinhardt M2 in chrome nickel
1982 Armstrong 80
2006 Yamaha 584
1978 Artley piece of crap 15 P
1982 Gemeinhardt 4S
1980s (?) Armstrong all wood (no model)
2006 Jupiter di Medici G0199
Plus many many flute-cousins....