Go for it!
Can I just say, that as a trombonist, I, like many can get a bit prissy about playing music designed to be humourous. However, as a listener and audience member, it normally works well. Quite often it gives the audience a bit of a break from the sometimes tedious programming you get in some band concerts! My spell on Bass Trombone was at Leyland some years ago, and I knew that, "like it or not", if i did a humourous solo... some of the audience members would always come up to me at the end of the concert to say what a good player I was and how entertaining the music had been.
I knew full well that the principal cornet and euph had played wonderfully well in their technically brilliant solos, but the audience appreciate being entertained! If you are in any doubt, ask Steve Sykes?
It's the quality of how you play, not so much what.
Go on... entertain them, and have fun doing it!