No

No... the most effective answer to any question and/or demand made by anyone of equal or lesser athority. No can be used in any situation but its recomended use is NOT against someone of greater athority such as the following:
-(Wrestling) Coaches
-Parents
-Bosses

-etc.
Misuse of "No" can lead to the following:
-Any number of STD's
-A blacked eye
-A kinfe to the liver
-etc.

No...