DrewSpz, I suggest you check out previous trip reports by a447 as he tends to go into a lot of detail about his experiences at Good Boys Bar. It has been reported here by members who frequent or pass by the bar that the bar boys are all 18 years old or above.
As far as the minimum age of the guys who work in the bars are concerned, 18 years old is the youngest you can legally engage with.
And, 18 years old is the youngest we discuss on this forum.