Summary: Shibboleth, n. 1. A common saying or belief with little current meaning or truth. 2. A word used to detect people attempting to conceal their true identities (Biblical).
Heavy content warning; no sex, perhaps some UST.
Spoilers: Redux I & II (fifth season), Wetwired, fourth season generally.
Many thanks to the Beta Readers' Circle, who provided valuable help. None of them is responsible for the content.

Rivka T makes a funny. First in what turned out to be a long line of cliché-fics, but was a serious outlier at the time. It's the FBI Halloween ball and Mulder's got a surprise under his - tights. My first story, ever, apart from the ones I told myself and never wrote down. While parts of it are embarrassing, to say the least, it brought me into XF fandom, and for that I can never be sorry.