Verb
rock up (third-person singular simple present rocks up, present participle rocking up, simple past and past participle rocked up)
(informal) To turn up at a place or function spontaneously or unexpectedly, without notice or prior warning.
(climbing) To work one's way vertically up a chimney or cleft using a rocking movement.
(slang, drugs) To turn powder cocaine into crack cocaine by cooking.
Source: en.wiktionary.orgPiece by piece, pushing that rock up the hill. Bill Clinton
The days of an open mic night when I'd rock up in an old jumper are over. Katy B