The written equivalent of many spoken terms, which expresses surprise which is somewhat more than mild, but which will also avoid potential removal for unsavory language.
While one is defecating they jack off and ejaculate down into the toilet on top of their steaming pile of diarrhea.
(note: Can also be performed on someone's body)
I was bored while taking a shit today so I went ahead and gave that toilet the biggest hot beef sundae ever.