Similar to a thingamyjig or a whojimaflip; i.e. a space filling word for something of which the correct temp is unknown. Similar to a dooffitflangemonkey.
When you have a loosedingleberry but don't realize it, so you wipe quickly from front to back and fling it onto the toilet seat cover
After i had that aggressive shit and wiped, I wanted to rest, so naturally I leaned back agaisnt the toilet and felt the awfulsquish of an unknown flingleberry against my back.