The female equivalent of tea-bagging someone. Refers to a woman lowering her loose, flappy labia or 'beef curtains' into the mouth of a person that has fallen asleep at a party. The action resembles dunking a beef dip sandwhich into au jus.
" What a crazy party last night. I can't believe she gave her the beef dip!"
"Yeah, serves her right for getting drunk and passing out on the couch."