worm (one's) way into (something or some place)
1. To crawl, wriggle, or squeeze into some tight or confined thing or space. The dog likes to worm her way into bed with me and my wife at night. I can worm my way into these pants, but there's no way I'll be able to zip them up.
2. To get oneself into a place or a situation, with a touch of trickery, artistry, or cunning. He wormed his way into the big meeting by hanging around the boss before it was due to begin. I can't believe we managed to worm our way into the nightclub without having our IDs checked.