Feeding it/her the beans (also sometimes heard as "feed her the onions") means to redline a vehicle and/or generally just feed the carburetor or throttle body lots of fuel.
Synonyms for Feed her the beans
On this page, you will find 30 slang terms related to feeding her. Some of the top words include: chili sauce, Fooding, Kibble, mcshizzle, assbeans, and 25 more.