i'm going to my sisters wedding on saturday and am no doubt going to be repeatedly asked the same questions by family friends or relatives so want to have a bank of witty (or otherwise) retorts so that I don't have to say the same things over and over and over again.

Along the lines of:

Q1. So how come you don't have a lucky lady with you?
A1a. You've seen my face right?

Q2. So you'll be next down the aisle then
A2a. See Q1
A2b. hahahaha
A2c. Yeah, of the supermarket. LOL.

So, add other likely questions to the list and any possible answers that'd be suitable/unsuitable/funny