Complex sentence: On Tootie's birthday, Timmy uses the "Mike E. Mozzerella's" passes given to him on himself and Chester & A.J. by Tootie, instead of attending Tootie's birthday party he just enjoys the place.
Split into simpler sentences: On Tootie's birthday, Timmy uses the "Mike E. Mozzerella's" passes given to him on himself and Chester & A.J. by Tootie. Instead of attending Tootie's birthday party, he just enjoys the place.