T-R-O-U-B-L-E with a Capital F

This picture speaks volumes about the relationship between Finn and Lily. He had her neck in a vice grip, and she was literally grinning and bearing it. He climbed on top of the jungle gym, and she followed him. He walked across the bouncy bridge, and she went too. However, she drew the line at going down the slide.  The girl does have her limits.