Very.
Beating it in basic is, uh, peculiar. I'm sure I probably did once or twice, but the diddly is probably the last thing on most guy's minds. They ensure you have as little personal and/or private time as humanly possible.
One time one of my DS's told a private to shut his penis garage.
Those guys sit around all day and come up with witty insults, reaching for that pinnacle of R. Lee Ermey greatness.