simmadown now 

verb- To calm down, quiet down, or keep it down.

1st and ten SIMMA takes the snap drops back fires DOWN in the endzone for a touchdown NOW cmon hits the extra point. It's SIMMA to DOWN followed by NOW and it's SIMMADANA!!

simmadown now by CarolinaGuy May 16, 2003

simmadown now 

slang for simmer down now,also means calm down now

Barry!Simmadown now!

simmadown now by Matt February 10, 2003

simadownnow 

shut the hell up

you better simadownnow.

simadownnow by simba June 30, 2003