Step one: Begin yelling - This will startle them at first. They will be all, "Hold up. Wait. What are you doing, mama?"
Step two: "Mama's FUN!" - This is when they join you because they realize that you are the coolest mom that ever happened. This is the longest step and can take several minutes.
Step three: Boooooring - Children have short attention spans. This is what works in your favor to end the yelling. After a bit of fun, your kids will be all, "Ok, enough mom. Jeez. Stop yelling already!" And VOILA! The noise level goes back to normal.
A video demonstration? Totally. You're welcome.