Here’s a picture of pinkie pie blowing raspberries on applebloom’s belly. This was originally supposed to be applejack blowing raspberries on her belly, but I couldn’t find any vectors that could be close to what I had in mind.
 
So this happened when applebloom was at sugarcube corner with pinkie pie and having some fun time with her. Pinkie pie was thinking about applebloom’s ticklishness and then she layed her on her back and then started to raspberry her yellow belly. Applebloom’s soon squealed with laughter while pinkie continues to tickle her.
 
Pinkie pie: it’s raspberry time! blows raspberries
 
Applebloom: Squeals