If the FMA characters did commercials:

----------start commercial----------

Ed (appears in front of screen about 2 feet taller than he usually is): Hey there! Remember me? I'm Edward Elric! But do I look taller?

Of course I do!

I was so tired of being picked on by my shortness, I created a new power-drink that will make you taller in 48 hours!

It's Ed's...

RUNT-B-GONE!

(a big bottle of purple-ish looking liquid is displayed on the screen, labeled as RUNT-B-GONE!)

Ed: As you can see, the results are definite! Just look at me! And it only costs $59.99!

Roy: (comes up to Ed) FullMetal! When did you have a growth spurt?

Ed: (looks down at Roy) It wasn't a growth spurt, it was my power-drink: RUNT-B-GONE! Get yours today! Call 1-800-FMA-RUNT. Again, call 1-800-FMA-RUNT, and get RUNT-B-GONE! for $59.99! winks

Get yours today! No refunds.

-----------end commercial------------

Ed: (gets off stilts) I hated calling myself a runt, but the reward will be oodles of cash.

Roy: (examining RUNT-B-GONE!) Think anyone will notice that this is actually sludge?

Ed: Nope!