Conversation Changer #20 : Sleep

Prepare: Either be really tired already (if you know that an awkward conversation will definitely come up) or just have good acting.

What to do: Fall asleep in the middle of the conversation.

Example: 
Jarrah: I'm so excited for this summer! Carlos, we are going to have so much fun! We can reread the encyclopedias we read last summer, except it has to be the updated version of course and of course we can annotate them too.
Carlos: Um, no thanks.
Jarrah: What? Don't mumble. We can also count the number of words in the books in the Library of Congress and then dust them and-
Carlos: (snore)
Jarrah: Carlos? Are you awake? Do you not want to talk about this?
Carlos: What? Cookies...
Jarrah: Wake up! Let's go eat some cookies!
Carlos: (slowly awakens) What? Where am I?
Jarrah: Chocolate chip or sugar cookies?

Conclusion: You've changed the conversation! And got a nap in too!

Warning: Make it realistic and don't be too tired or your friend might leave you asleep wherever you are. Falling asleep in a fountain is not pleasant. Just saying.

Conversation Changer #19: Moving

Prepare: Come up with a realistic place you could move to (unless your friend is not very bright, then any place will work). You could also actually be moving or use this when you are moving but that is definitely not a requirement. 

What to do: When you need to change the conversation, simply tell your friend you're moving.

Example: 

Alberto: Will you please tell me?

Kris: No.

Alberto: Pretty please! 

Kris: No and that's final.

Alberto: COME ON!!
Kris: NO!

Alberto: I know that you like Maria!! Come on, admit it!!

Kris: I'm moving.

Alberto: What?

Kris: To Ohio.

Alberto: NOOOOOO!! I'LL MISS YOU SOOO MUCH!!!

Kris: Just kidding.

Alberto: (sigh of relief)

Kris: I'm actually moving to China.

Conclusion: Once your friend is hit with the realization that you are "moving", they will start talking about how much they'll miss you and how nice and sweet you are.

Warning: Have a believable excuse for why you're actually not moving later when you don't end up moving. Try to sound realistic and don't use this often.