Prank Call Boyfriend

Determine the time needed for the prank call.
Pick from one of the different pranks listed below:

1) My Vengeance
2) Oh Yeah
3) I Don't Think So
4) You will die
5) Control Tower Radio
6) Alien Laughter
7) Prehistoric Man
8) Shooting Range Instructor
9) Hysterical Laughter
10) Wow Choir