I have loads
Two i can think of;
On seeing an old friend in the supermarket, I hadn't seen her for ages and I have my dd (aged 2 don't forget) with me. Conversation went like this
Her; Hi haven't seen you for ages hasn't dd grown?
Me; Yes, she's 2 now!
Her; She's beautiful, how are you?
Me; I can't believe she's 2!
Her; What have you been up to?
Me; Not much, dd is 2!
Her;
I must be going 
I was thinking STFU about dd's age, but couldn't stop, had a massive crazy grin as well. Realised I needed to spend some time in RL.
In the pub years ago and a really gorgeous random man started chatting to me. He was really sweet, but, unfortunately had a massive spot on his forehead. I couldn't stop staring at it, it looked fit to burst.
So I lent forward and
Bloody squeezed it........hard.
Conversation stopped and he looked at me like 