Is a playful way to say sex, smash, and all terms to say fuck! It comes from the game "duck duck goose" but was used in a game called "hide go get it." Also it commonly from the pants pressing days as a child.
1)To grab someone's butt check(s) with all 4 fingers and thumb of one hand as if by the beak of a goose. Element of surprise very important.
2)To grab a woman for the very first time in the genital area. Done quickly and without finesse or foreplay. If a finger or two penetrates the vagina, so much the better. Element of surprise very important.
3)To stick your thumb up another person's butthole (or vagina). Element of surprise essential.
I goosed my brother as we came up the stairs outta the Tube.
I goosed Nancy's snatch once I decided the first date wasn't working out.
Once I saw her naked I knew I didn't want to fuck her. She was coyote ugly, I goosed her instead. She just thought I was getting her ready for anal.
Your wingman at the bar. He'll take the bullet for you; fat or fugly, he'll tame the beast. Originated from the movie Top Gun, Goose was always Maverick's wingman.