Mage: *whisper to mikey* it's simple we get donnie to go in the same room as april( he will have to be really distracted to fall for this) and have fishline rigged up in such of a way to where he will trip and instinctually as a ninja he will most likly use his momentum( speed and force) to other catch himself or flip. If he flips then we will need to have a rope set up right in front of april where he would most likly land. That rope would cause him to go forward again, only this time, since he is so close to april, he will just land. In most beings it is instinctual to stick out there arms when falling.
How ever if he simply catches himself( unlikey because by april he will want to show off more) then you have an emergency metal bucket( extremely grease for silence and lack of potential to cause a concision) to land on his head. The bucket will make a noise after it hits his head so april will go to investigate. She will be worried so she will not pay attention and notice the rope that will trip her and sebd her flying into a set of ( possibly unconscious) donnie arms.
MICHELANGELO:
*Low whistle* Man, you thought long and hard about this.
I was thinking of something like; locking them into a freezer for a couple of hours and forcing them to 'snuggle up' for warmth *laughs*
But your way works too :D
Let's do it
-Dr. Prankinstein!