roll up on

== English == === Etymology === From roll up + on; semantically and morphologically parallel with roll up + to. === Pronunciation === === Verb === roll up on (third-person singular simple present rolls up on, present participle rolling up on, simple past and past participle rolled up on) (African-American Vernacular, slang, idiomatic) To sneak up to (someone or something) with the intention of causing harm.