The act of inserting an object in one's anal cavity in order to "attempt" to encounter fecies. Despite the name, fecies do not, in fact, have nerve endings, so there is no way to measure if they receive a "tickle". Fecal tickles can have pleasurable intent, as well as malicious- and often come as a surprise to the host party.
Robb was watching Greys Anatomy and drinking wine with Carl. Robb fell asleep on the couch, so Carl decided to fecal tickle Robb with a Apple TV remote.
by JR "Paycheck" December 19, 2016