i know what you mean bro, i caught a lot of hell from the guys here when i told them i had super low body fat, i too am an ecto and very hard gainer. these guys all thought i was braggin and were talkin shit.
yeah if i go more than 2 hours without a meal, i get real weak and lightheaded and very irritable. it sucks having super low bf, i mean it looks cool like some kinda abercrombie model, chicks dig it, but it's a maintenance nightmare.