Okay, I'm going to take a stab at this,
but don't laugh if I screw it up...
Okay, so my dh is just under 9in and we
have bd about 200 x's (every other day
sometimes more) a year for the last 3
years.
So that is 9in in and out so 18in x 600
thrusts (i'm going with you on that one).
Thats 10800 inches in one sitting. (or
laying down...standing up...in the
kitchen..whatever)
So thats 10800 inches about 200 times a
year.
Thats 2,160,000 inches of 'manstick'

a
year....

(no wonder I'm
tired all the time.)
2,160,000 x 3 years = 6,480,000 inches in
a lifetime.
To be fair, my first time was not with my
dh, so I feel obligated to add in those
inches. So lets see 3 inches X 2 for the
out = 6 inches a thrust. 6 inches X
oh...lets be generous...10 thrusts = 60
inches total. (i'm being nice).
Back on track. 6,480,060 inches in a
lifetime.
So, that come to a grand total of 102.3
(rounded) miles.
Wow...When you think about it like
that...I shouldn't be walking straight...