What are Ram Rules? Glad you asked:
Cliff's Notes version, for those unwilling or unable to watch, is that there are five "Ram Rules," two of which involve shouting things in unison -- "Sack!" and "First down!" -- at the end of certain plays.
The other rules range from the obvious (be quiet when the Rams are on offense calling plays) to the even more obvious (cheer wildly when the opposition faces a third down) to the ... uh ... awesomeness of '80s movies (slow clap before kickoffs).
That last one has to be the best. I like the idea of not doing what everyone else does before kickoffs -- the drawn-out "Ohhhhhhhhhhhhhh" -- and I love that this particular Ram Rule comes from a middle-aged woman with rams horns apparently growing right out of her head telling us, "Let's slow clap it out."
I assume that moment is accompanied by this clip: