highball something—(coll.) drive a vehicle at high speed:
- Our conductor called “All aboard!” … then highballed the train. A few minutes later he got a phone call stating a passenger had gotten left behind.
lowball something—(coll.) deliberately underestimate or understate a cost, figure, etc.:
- This is all my fault, but he was one of my first clients and I lowballed the price just to get the work.