Here I show you how to make yourself laugh in COD4MW. All you have to do is to throw a flashbang, grenade or perform another action at the correct moment. There are some spoilers so I recommend this instructable to those who have played COD4MW. Enjoy!
Step 1: F.N.G-Dance of the SAS
In this level, after you knife the watermelon, run straight to Captain Price. The hangar door will slide open, and a guy will say "Its the FNG sir. Go easy on him sir, its his first day in the regiment."
before he finishes that sentence, run to your right and up a ladder to an outpost, where there will be 4 flashbangs and an MP5. Grab the flashbangs and throw one of then below near Captain Price (if you throw it at him, a message saying 'Friendly fire will not be tolerated!' will flash and it will be game over.) After throwing the flashbang, run down the same ladder and you will see the group unaffected by the bang. Then in 2 seconds, after the bang has disappeared, the SAS troops will be running here and there, with Price looking at them and saying, "Pick up that MP5 and four flashbangs." At the end of this sentence, Price starts coughing and running.
Step 2: The Sins of the Father-A Fun Way to Kill Victor Zakhaev
At the end of this level, when Vulture 1-6 says,'Yeah, positive ID. Target is on the roof, he's all yours" run up the stairs and take position near the Russian. Start cooking a grenade and when Victor steps back, throw it behind his back. When he turns back to look at it...BOOM!
Hope you enjoyed my Instructable!