A fork of Rural Dictionary
When a man and his girlfriend buy a pound of butter and butter up the floor. Then they strip and the girl lies down spread out like an eagle, while the guy takes a running start and slides into her. Often, bacon grease is substituted with butter to make it more "american".
Billy: Dude, I gave Trixy The American Eagle last night! Bob: Did you miss like last time? I'd hate to be the doctor that has to straighten your dick every time you do this. Billy: Hell no! It was great! I even ate the butter after we were done!