Ways to tick of telemarketers (yes, we ALL get them).
Why Maddox is the most awesome guy in the world. (PM me if you have no idea what I'm talking about).
Hot peppers. For effect, bring a Halbanero to School (raw, with seeds still in), and at the end of the speech, eat at least 3/4 of the pepper (they are small). Chew and swallow. One guy did that in my speech class, and it was HILLARIOUS!
NOTE: Make sure to havea glass or two of milk handy. That was the other guy's mistake

YOU HAVE BEEN WARNED!
How the mysterious TV set works
The historical significance of pancakes.
Really, really BIG guns:
http://www.firstworldwar.com/atoz/parisgun.htm http://www.3ad.us/history/cold.war/n...mic.cannon.htm http://www.gridclub.com/fact_gadget/...lways/941.html http://users.belgacom.net/artillery/...erie/5441.html (Read the part about 'Little David')
Why asparagus makes your pee stink:
http://www.discovery.com/area/skinny...5/skinny1.html