LOL the Sandwich is fucking awesome!   Oh man.....Gooood Times!    

The Sandvich is the Heavy’s first unlockable. It tastes as good as it looks and heals 120 health. Like in real life, the decision to eat a Sandvich must not be taken lightly; The Heavy is completely vulnerable during the four second eating process, and his loud, happy sounds of vigorous chewing will draw enemies like tiny ant cowards to a picnic. OF DEATH. On the bright side, the Heavy’s Sandvich supply is unlimited, so his only real concern is being caught short while enjoying this delicious edible device. The Sandvich is a great tool for a Heavy defending an area, as it gives him the ability to replenish health between enemy waves without having to abandon his post. Similarly, an offensive Heavy without a Medic can step back from the front line and grab a quick snack before resuming his rampage. Beware, however: the Heavy must set aside his shotgun to take the Sandvich, and enemy Snipers are much more dangerous for a Heavy wielding only a minigun.