The rebuttle must ALWAYS hinge upon what the person said.

The intent, is to make THEM the butt of the joke, and have the audience laughing AT them, without their knowing why.

After two or three shut downs...they are always ready to quit. YOU must NEVER be offensive...the the hinge of the "joke" swings upon the other's remark. It requires a quick wit....but with practice you can practice it. (The mudcat "family" are a good place to practice.)

So...back to YOUR specifics..."It sounds like a wake"

Stop.....you reply "Yes, indeed, you are very perceptive, the wake of a boat, lapping against the shore." .....

Her, reply, "No a funeral wake".....

Your reply, "Yes, indeed again, that is it precisely, a funeral wake, from a boat overload with a dead-drunk-fat-woman.....Now, back to that sound you like so well....listen for it again."

Her, "No your music is dead"

You, "Yes, for a corpse you are most lively, and it for you we played this dirge, a pity you have not missed your own funeral." etc. etc. etc.

By now, either the bouncer has done his duty, or you switch pace into another number, much more lively than before.

Most importantly, Have FUN, and the audience will too.
Don't take YOURSELF, or the music... so DAMN SERIOUS!!!!