I am a big fan of people going with their themes. At Bayou a team called the Cyberwolfs (647) was there and everything they did, from being called to the sticks or even being picked, was in theme, and as a group when the flight team saluted the emcee they looked very disciplined and very organized compared to many of the other teams.
Now back on topic, you can not graciously accept and many people realize that but they do not understand that saying something like that changes many people's impression of you.
Personally I like, "Let’s do this! l LEEEEEEEEEEEEE ROOOYYYYYY!!!!!!" But I doubt everybody in the audience would get it. ***
Pavan.
*** In World of Warcraft a group of friends or a "guild" is preparing to attack a very difficult part of the game and after spending WAY too much time planning their strategy, one of them (Leroy) just charges in with a battle cry of, "LEEEEEROOOY JENKINNNNSSS!!!" The plan goes to pieces, and they all curse him (Watch the video here)."