When your wife starts sending you mail through a solicitor even though you still go home for dinner.
When all you can think about whilst "doing the deed" is the line and safety set up and just getting back out there
you look outside and see a lot of wind then look at your kids (aged 4 and 1) and think "well the 4 year old can change a nappy"
Or just plain talented
Not personal experience. No women have ever conceived thanks to me, but plenty have had orgasms. One of my school friends though, a girl, had had a child but wasn't sure she'd had an orgasm. "I think I have" she told us once. You know what that means.
But seriously in all honesty you don't stay married unless the partner can perform
You can't work as soon as it gets over 15 Knots, and you can't do any book work because of this web site.
your working at the fish n chip shop, and all the basket handles start to look a lot like kite bars.
or when your too stuffed to do anything, and the boss gives you a special talk.
or when you show up 3hours late because it was sooooooo good.
your looking for a second hand 35 metre kite on ebay to fly on those 8 to 9 knots days.
you buy another kite for the quiver just before your bank a/c closes and you start a joint a/c with your girlfriend.
you wash your saftey on your harness in the carpark of a funeral home then hope it is not windy whilst the funeral is on. Soon as the funeral is over you see that it is windy and you say to your dear family you have to go in a hurry. (true story happened yesterday to a friend of mine)
Your right foot pushes hard as you drive like a devil. You try slowing your breathing down and say calming things but nothing helps, you just have to get there now.
When it's taken a year to get over a major kiting injury (major knee reconstruction - 3 our 4 ligiments blown) and your limping into the water with a knee brace and yahooing on the first ride back. I've been back kiting over the last 3 weeks and already bought a new kite and board...... yesterday's kiting felt like old times.
when ya plan ya friends around Kiteboarding instead of planning kiteboarding around friends
I have no friends any more
.
you know your addicted when you take a sicky from work, then go through work to get some gas for the trip to the coast 
sam.. you party extra hard in winter to compensate for the lack of going out with your friends in summer 
you know your addicted when you have a weird skin colour like mine its kinda like that winky thing
