There I was under the front end doing the usual oil/transfer fluid changes and figured why not hit the zerks with some grease while I'm covered in stuff anyway.
Got them all then did the front prop shaft. Squeezed, squeezed some more, still nothing from around the seal. Got to thinking aloud just where this stuff is going to. Gave it one more squeeze and found out. It's going up the shaft to a little hole just behind the U joint and building up into a nice sized blob that fell directly onto my forehead.
My jeep pooped on me!