Disclaimer: I still don't own FMA, never have. So just please read this.

Edward Elric

Call him short

Take away his automail arm so he can't do the "clappy thingy"

Force feed him milk

Force feed him milk while calling him short

Tell him Al hates him

Replace his oil for his automail with chocolate syrup

Send him to a small island in the middle of the ocean with a false lead on a philosophers' stone

While he's on the island sink his boat

Tell the homunculus where Ed is

When Ed gets back tell him you sent him to the wrong island and that it was the one next to it.

Send people who Ed has gotten arrested to the island where he is

Tell people he loves to be called short

Strap a sign on his back that says "kick the midget"

Get him a shirt that says "Edward Cullen is better than Edward Elric"

Remove his automail and transmute it into a giant butterfly and say Ed made it.