"Skee-Ball" is a system in which places sexual activites on each level, which as the levels get higher the activities get increasingly more naughty.
Level 1 - Hugging, Holding hands, Peck kissing
Level 2 - Slightly intense kissing, minimal hand-to-body contact, laying with each other
Level 3 - Intense making out, feeling everywhere on the body, slight
nakedness, slight fingering
Level 4 - Blow jobs, Hand jobs, eating out the girl, total fingering, sex-teasing
Level 5 - Have sex with the other person.. Also known as 'game over..'