What to answer when you escape from school

Let muah tell you how...
do you know 99% always say i'm having sickness, headache, stomachache, blablabla... and 1% is i wanna go home la!
Today let me tell you how i going to answer them!
I'M NOT SKIPPING SCHOOL
I'M ON A SELF-MOTIVATED FIELD TRIP
i'd wrote them while i'm requesing for school leave...
while i'd pass to the principal...
he approve me...(i don understand why.. or probably he don understand english or what)
SO DON HESITATE... JUS BE HONEST TO THEM
NO GUARANTEESTM