151 Angelina and Angel on a greasy mission 1
151 Angelina and Angel on a greasy mission 2
151 Angelina and Angel on a greasy mission 3
151 Angelina and Angel on a greasy mission 4

Angelina and Angel got a huge transparent beach ball. They taking turns in blowing it up. The tops just bother them at playing with the beach ball. What could be missing?