Umm, this is just a pic I made in study hall. The school had a blood drive, I donated, and this kinda popped into my mind. Irony was, the time I finished drawing, the requirements to give blood hit me in the face.

Ling was a good boy, he donated, so he got a cookie.
Al cannot give blood, so he is trying to have Ed give blood.
Ed cannot give blood for two reasons:
1) He is not 16.
(I'm sure Izumi might force him to give blood or something if he was old enough)
2) He does not fit the height requirements.
(Ed did not make any comments after he found out he couldn't donate due to his stature. All he did was walk outside before freaking out)