1
general::
Phrase(s): slip down
to slide or glide downward. • His socks kept slipping down. • He lost so much weight that his pants almost slipped down., Phrase(s): slip something down
to slide something downward. • I slipped my pants down a little so the doctor could give me a shot in what they call your "hip." • He slipped down his pants a little.
McGrawhill's American Idioms And Phrasal Verbs