"whoa, am I an ass or what." A great deal of the time it can involve hypocrisy -- e.g. that old verse, "You hypocrite, first take the log out of your own eye, and then you will see clearly to take the speck out of your brother's eye" (from book of Matthew). 

For instance: I used to party my ass off and be a relatively boisterous person, something I am still capable of. Wanting to enjoy the peace and quiet of home, however, I'd curse my current next-door neighbors, usually under my breath, for their into-the-night parties, loud music, poorly-attended-to (I was afraid) bonfires, and fireworks that ended up in my yard. Once, even, as I finished mowing at 9 p.m. on a summer's eve, the lady of the house came to her doorstep and said "isn't it a bit late for mowing?" Assuming the animosity went both ways, I sarcastically said, "that's quite ironic coming from YOU." I felt a bit bad after the comment because I knew that family had been hit with the tragic death of the husband a couple years before, but I smugly justified my snitty comment for some dumb-ass reason. One day the woman saw me in the yard and approached me. She said "I am sorry for all the noise and trouble we've caused in the past. I was so devastated after my husband died that I just wanted to surround myself with family and friends, and so I have had 15 people living with me and I know it has been a bit much." I glanced down and stuttered some apology for not being more patient, and that was the first time (regarding my neighbors) that an ass-hat flew on my head. Additional ass-hats have been added to the pile as (1) I learned that this woman had been left with her husband's children from a previous marriage, (2) the always dressed-in-black son in high school came over and fixed my mower, (3) I found out the woman liked to have bonfires and outdoor parties because she loves the outdoors so much ... uh, just like me, (4) she is also an ordained minister (!), etc. etc.

So there's my contribution.