To kind of joke them out of their anger/frustration/sadness, I would almost certainly answer, "And ARE YOU a butthole??" And they would most often giggle and say "No."
Perception IS reality, but sometimes you have to skew it just a bit.
Today my brain is tired and unhappy and feeling all the yuck of trying to learn all the new things and failing at them the first, second, third, etc., times. My brain wants her old job back, when the hours lagged on without a thing to do, and almost everything was doable and easy, and anything hard was solved by "Let me ask Dan about that." She is feeling stupid and ungood at things, and hates feeling that way (who LIKES feeling that way?).
Just gotta keep going. Have a cry, eat a brownie, and keep going. There's more success than failure happening here, and eventually everything will click, and things will be fine and easy and doable again. Eventually my coworkers will stop throwing new things at me. The hours will lag on again.
No one is being unkind, and they're all wonderful and supportive, always. I'm just tired. Today especially has been a study in "everything I don't know and will need to learn in order to be capable at this job" and I feel dumb and stupid and stupid and dumb.
But am I? NOOOOOOOOO. I am not.
Gonna eat my brownie now.