[81FO]

Hey, Mac Illbay doesn't understand Marines. Only two groups do: Marines and the enemy, which learns the hard way.

[JoeSixPack1]

Only two groups do: Marines and the enemy, which learns the hard way

Thanks. We've been trying to say that but with way too many words.
Harley-Davidson T-shirts say it like this:

IF I HAVE TO EXPLAIN, YOU WON'T UNDERSTAND

[COB1]

Welcome aboard, 81FO.
You got your globe and anchor two years before I did.
That makes you "old corps" in my book.