The Washington Post told us Thursday about Regulations.gov, a site that can tell you which federal government agencies get sworn at the most.

The online database collects the public comments people send in when the agencies propose new rules.

The Post conducted its research using two words. I won’t spell them out for you, but one starts with an “F,” and the other with an “S.”

Not surprisingly, the Internal Revenue Service gets sworn at the most. The Fish and Wildlife Service was No. 2, which doesn’t quite make sense although maybe people were using the s-word literally.

Something called the Pipeline and Hazardous Materials Administration got the least swears tossed their way. Perhaps because no one knows they exist.