creep on (someone or something)(redirected from creeping on someone)
creep on (someone or something)
slang To observe, investigate, or become overly familiar with someone or their personal matters in an intrusive or undesirable manner. I felt a little weird creeping on all his social media posts like that, but I wanted to know what he was like was before going on a date with him. Some guy in the corner has been creeping on us all night long. Let's go ask the bouncer to deal with him.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.