[Jim S]

"They let us do it last week!"
"I know that kid, he wouldn't do that!"
"Let em play!" (Translation: "Don't call that on our team!")
"We've been using that play just like that for years!"
"That's holding!"
"He was down first!" (Normally called from at least 40 yards away, through two teams of players)
"Really? When did they change that rule?" ("1971 coach" or, in a lot of cases, "Before you were born coach")

Any of these sound familiar?