when you cannot say-- Well, you know what in polite company--Such as: "You don't know Bob Costas!
Or: "You don't know Bob Coasta from Shinola!"
"Eat Bob Costas and die!"
"Be back in a minute, gotta take a Bob Coasta."
"Gadzooks, you could fall in a pile of Bob Coasta and come out smelling like a rose."
"Oh no, I stepped in Bob Coasta!"
"Well, looks like you are Bob Coasta out of luck--"
"He has Bob Coasta for brains."
"I don't give a Bob Costas about what anybody thinks."
"Bob Costas happens!"
“He's a piece of Bob Costas.”
"Whoa, I Bob Costas in my pants!"
"I am just Bob Costas out of luck!"
"You are nuttier than squirrel Bob Costas!"
“If you start to smell some of the Bob Costas, you start smelling all of the Bob Costas.”
"I think a Bob Costas storm is coming--"
"I have a Bob Costas job."
"You're talking Bob Costas!"
"I'm so full of Bob Costas.”
“He is so rich, he has no room to Bob Costas.”
"If it takes us 10 years to get into the Bob Costas, it will take us 20 to get out."
“Don’t shout my friend; no one gives you Bob Costas unless you make them.”
"That is a ton of Bob Costas!"
“When you're up to your nose in Bob Costas, keep your mouth shut”
“Life is like a Bob Costas sandwich the more bread you have the less Bob Costas you have to eat.”
"I don't give a Bob Costas about that."
“Hey, I have a built-in Bob Costas detector.”
" I may not know much, but I know Bob Costas from chicken salad.”
"Gad, she thinks her Bob Costas doesn't stink!"
"Whoa, I almost got the Bob Costas kicked out of me--"
"Yea, you got the Bob Coastas end of the stick."
"This is some deep Bob Coastas!"
“Bob Costas floats to the top”
"My life has gone to Bob Coastas!"
"Shut up, you're talking Bob Costas!"
"If this Bob Costas goes on--"
And now, if any of you have anymore Bob Costas you wish to offer... 
be my guest--
Hadn't see tnis one.