What might that be...U... Udonge?
You've searched pretty thoroughly.My master's beloved...Tell me if there's anything wrong with your state.Ah...but that's...
You're being extremely assertive...Down there...that is...An "Onbashira"
... is it not?
"Onbashira" literally means something like "honored pillar" and can refer to either logs vertically raised as part of a particular festival, or this festival itself. Given "Onbashira" is spelled in Katakana here, it can be inferred the term is used as a suggestive euphemism.