PHRASAL VERBS (J)
To raise (a physical object, a price, etc.)
ex. "The hotels around here usually jack up their prices during the summer season."
To kid. To be humorous.
ex. "He was just joking around, but his girlfriend didn't find it funny."
Jump all over:
To seriously scold.
ex. "She jumped all over me when I got home at 3:00 AM last Tuesday."
To willingly seize/ accept the opportunity.
ex. "George jumped at the chance to go to Australia with his best friends."