Let me set the scene for you.
A coworker comes over to my desk to discuss some development work on Project A. I should be working on Project A, but got sidetracked with Project B. The following conversation ensues.
Me: I’m glad you stopped by, I should be working on Project A.
Coworker: Oh that’s OK.
Me: No really, I should be working on Project A but you know … *snort* …
……
Me: Wow, I totally snorted just now.
Coworker: Oh, that’s OK too.