worm wiggler

1. A sexually inexperienced girl who nevertheless enjoys overly-fondling the penis, particularly a flaccid (and thus non-threatening) one.

2. Any woman or girl who truly enjoys handling the male member.

Can be disparaging, or not.

"Shit man, I've known Brunhilde was nothing but a worm wiggler since that sock hop back in '58."

"Julie's a cute little worm wiggler, isn't she?"