the act of cutting out the inside of a telephone book, taking a shit in it and hiding it, or replacing it in someones house, only for it to be found later either because they need to use the phone book or due to the rotten shit smell; a fraternity prank as described above
To get revenge on the rival fraternity, Shawn decided to shit coil them at their party last weekend.
by dreddie September 12, 2008