Beg them to go to the theater.
Convince them for going to a Christmas exhibition.
Request them for going to a science museum.
Suggest the park- there is a new soccer field that would be cool to check out. Or something like that.
Let's go to the mall!
Belch and say wherever.
Shove the flyer back in their face and yell "you like that?!"
Say "excuse me! but I am trying to have a nice time!" and walk away.
Grab the whole stack of flyers and run of with 'em.
Say nothing but think of ways to humiliate him/her.
Tell them that if they continue doing that, no one is ever going to buy from them, and list off the stats of how much people buy from pushy salespeople.
Recite some witty Shakespeare dialogues.
Quickly regain your balance.
Get back up and tell your friends how often that happens to everybody in a month.
Get up and think of ways to make your fall seem more of a bigger or smaller deal.
Complain about your ruined clothes.
Make it into a joke and laugh it off.
Make it seem more dramatic and yell and cry at your friends for tripping you.
Complain that your new clothes won't fit.
Run a few laps around Mickey D's.
Sit back and daydream.
Pull out your mini chessboard and discuss strategy with your friends.
Talk about your school play and what part you want.
Lean back and tell your friends a joke.
Watch your favorite movie.
Read a book.
Surf the 'net.
Change your clothes.
Read a comic.