Ok, well I will break it down for the gents then (big could mean length or girth BTW).
If you could use a finger cot as a condom, your dick is small.
If a regular sized condom fits comfortably, your dick is average.
If a regular sized condom fits but is snug, your dick is a little above average.
If you have to wear a magnum (I mean REALLY have wear one, not wear one because your ego tells you that you need to) then your dick is big.
If you have to wear a magnum XL (again, REALLY have to wear one) then you have a freaking schlong that will make many women love it and just as many fear it.
If your dick is too big to fit into any type of condom at all, then you need Jesus and should just forget the real world and do porn.
How's that?
Meg
p.s. a regular sized condom will actually fit over the average woman's forearm. So trust me....we know our dicks! hehe