up and
- (denoting the act of rising or starting up, accompanied by subsequent action)
Wiktionary
adv
Etymology: Unknown. Possibly from get up and. Possibly a dialect use of up (verb).
- Abruptly; unexpectedly.
“Halfway through the performance he just up and left.”
“However, all of a sudden she heard a sort of a knocking low down on the door. She upped and oped it, and what should she see but a small little black thing with a long tail.”