To tell someone to calm down, to chill and not get fired up.
Rob: OMGGGOOSHH i like totally broke a nail!!!! OMG OMG Ben can you, like, drive me to the Jabani's nail salon!? For a fergantasious nail trim .Its like an emergency!!
Ben: OMG like totally i'll go get my keys!!
*Ten seconds later*
Ben: ROB!!!!! I CAN'T FIND MY KEYS!!!!!
Rob: OMG OMG OMG OMG OMG OMG
Stacy: ....... dudes ....CHILL YOUR FRILL!!!!!!!