Should I play this prank?

if you look at my before questions, youll hear about these girls jaden and skyler and what they did to me. well we are still friends but this should be funny. theyve done EVEN more to me ! So we have this huge party with some guys these girls like. So i decided to use a fuze and put a whole bottle of liquid laxative tasteless in that bottle and have them drink it because they LOVE fuze. I thought i should do it the day of the party(: Should i play this prank?? :D