There are some phrases that set off my red flashing BS indicator. These phrases are:
"I don't have a bigoted bone in my body"
This may or may not be followed by "but..." but it always means the same thing. It means, "I am about to say the most bigoted thing you have ever heard."
"That is unacceptable"
As soon as I hear a prim, "Well, that is unacceptable," the conversation is over for me. Sorry you can't accept reality. That's a shame. I know other people who are accepting.
"I'm a very spiritual person"
This is usually coupled with The Jazz Hands of Sincerity laid across the speaker's breast. Picture Mahatma Gandhi saying, "I'm a very spiritual person." You can't. Paris Hilton considers herself a very spiritual person.
What phrases trigger your BS alarm?