Simple... NEVER!!! Well done
Snapper
The permanent grin, for me, lasted around 3 weeks, but I still get that huge buzz when I think back to it.
GFT will come fairly close, but nothing beats it. Although I flew aerobatics for the first time last week, and I am still grinning about that... I'll come back to you!
In the meantime, if Mrs Snapper is getting bored, phone up all your friends and relatives, and tell them instead!