The last bit of shit that you cant squeeze out in the first toilet session, meaning you have to return to the toilet again in half an hour to squeeze the rest of the shit out
"good shit?"
"nah"
"why not"
"got a dump-anchor and it wont budge"
"try again in half an hour"
Bob: "Are you going to run up here and get your dog off my front porch?"
Me: "I would but I just cast off my shit anchor."
Bob: "Well hell, I understand, see you in about 3 hours."