spring for (something)
1. To pay for something expensive, especially as a treat for oneself or someone else. I decided to spring for the new video game as a reward to myself for doing so well on my exam. Janet is springing for a trip to Disney World for her family this summer.
2. To leap, dash, or dart toward something. I sprang for the door so that my wife wouldn't see the gift I was having delivered. The cat keeps springing for the dangling cord used to draw the blinds.
spring for somethingand bounce for something
Sl. to treat someone by buying something. I'm bouncing for pizza. Any takers? Ralph sprang for drinks, and we all had a great time.
Pay another's expenses, treat, as in I'll spring for the dinner this time. [Slang; c. 1900]
To pay for something: My boss offered to spring for lunch.