batman head

When a person that has their hair tied up in pigtails whom is simultaneously upside down and giving oral sex; the braids hanging in this way appear similar to Batman's ears - especially whence he is hanging upside down.

Bob: "Hey John, did you get batman head from that chick with pigtails from last night?"

John: "Why, yes - bob. When she hung her head upside down from the side of the bed so that I could more easily deepthroat her with my penis she looked just like Batman.

Agnasty

When someone aggressively has really dirty sex with one or more partners.

She's a freak in the sheets, last weekend me and her got agnasty in the back of my car.