Fact-based
When you use only real things you can show to back up what you're saying, no bullsh*t.
He said he didn't lose the game. I have the score. That's fact-based, not bullsh*t.
She said she didn't fail the test. I have the paper. That's fact-based, not bullsh*t.
You said you didn't get caught eating the chips. I have the crumbs in your shirt. That's fact-based, not bullsh*t.