A girl who is on the prowl and looking for some action. Though she comes on strong, the night may or may not culminate in rowdy sex- depends on how much of a tease she is.
Also a verb expressing the actions of a Dickfisher.
Emily: After a few drinks Eliza turns into a straight up dickfisher.
Emma: I know! She is probably the horniest drunk I know.
"Look at that girl rubbin' up on Jason. That is some prime dickfishin' if i've ever seen it."