Am I a cow?
Rabbit would be a better example: they need two turns to fully process their food, if you get my meaning.
Or a dog? Sometimes I have to wonder about the weird conversations we could have in Irish based on this course.
Does 'faoi' here mean something other than 'under' or 'about'? Is it more like the French 'fois' for 'time' or 'instance'? 'Times two'?
Yes. This link talks about this at the bottom: http://www.nualeargais.ie/gnag/adverb.htm
Second breakfast, anyone?
I'm certain there's a perfect reason why this sentence exists: namely the prevalence of cooks with short term memory loss, allowing for people to be served dinner twice.