I often fly with humorous Captains flying for BA, flying the 744 is a real treat. One of my favorite Capts and I were taxiing at Miami Intnl, for a flight to Heathrow, he was being quite chipper talking to tower, when holding short, tower said "Speedbird 206 Heavy, caution there's a turtle on the runway." The Capt replied, "Is it a large turtle?" Tower came back, "Ahhh negative sir, its about 6 inches in diamater." Capt: "Well, You better tell him to hold on tightly then!" Not long after that we were talking to Miami Center, Me: "Miami Center good evening, Speedbird 206 Heavy with you leaving FL180 for FL330" Cntr "Roger Speedbird 206 continue" The next call was a learjet with a capt with a strong southern accent. "Miami Center, Lear 3GW would like to get up to FL410" Center replied "Rgr Lear 3GW cleared to FL410" the next call was from the Lear to us on center saying "Hey British Big Boy, why dont you come up here with us." Without missing a beat, my capt said "We'd love to Learjet, but our wallets are holding us down."