A person who constantly asks for your advice, yet ALWAYS does the completeopposite of what you told them to do.
"Oh my God, Rich is such a total askhole!!! He always asks me what he should do about this or that and I give him my opinion, BUT he just NEVER listens to my advice. Rich just goes ahead and does what he wants to do in the first place. I don't know why I bother. "
A person who repeatedly asks for advice from multiple individuals, only to ignore aforementioned advice completely. The askhole will choose the least logical option (usually their own), skipping merrily down the path into unbridled oblivion, blissfully and willingly oblivious throughout the entire ordeal.
We can conclude that an "askhole" is a gaping, cavernous pit of stupidity, into which good, sound counsel is thrown and subsequently lost forever.
Josh: So, Liz asked me for some advice about her boyfriendthe other day. She said when she's with him she doesn't feel any sort of emotion... they're just kind of existing together.
Corey: So what did you tell her?
Josh: I told her if she doesn't get anything out of the relationship she should end it.