Top definition
It has several meanings and can be used in many different context.

1. of, relating to, or resembling a complete ass.

2. lacking intelligence or reason for saying or doing something so idiotic that doesn't require a response.

3. Absurd, Foolish, Ridiculous.

4. An off the wall comment.

ass-er-ninely: adverb
ass-erninity: noun
Ex: When one is sitting at the bar with their man and lady another person just sits there from across the bar or restaurant and just stare at you. (assernine).

When someone says something that's just utterly insane that it's not worth a response.......that's assernine.
by Big Money Grip February 18, 2012
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