a baseball bat used to hit someone in the nuts(scrotum)
Oh god she's got the nut bat
by assbag hernandez October 26, 2005
someone that hangs around another person, like bats hang upside down from a cave, so much that they seem to just be on that persons nuts all the time.
Yasmin has hanging around the office with Keith all day. She's just like a nut bat.
by the ham October 25, 2005