It's damn hard to tell sometimes (particuarlly when you dont know the girl very well) wether she's just being cudlly and friendlly or naughty and very friendlly.
For some reason I must have a sign on my head saying 'come on girls my thighs a warm', because I dont know how many times it has happend to me.
However I have had some vastlly different reactions. One such ocassion resulted in a swift kick in the groins (she was wearing those damn heavy doc martin lace up boots... OOWWW!). Another resulted in a swift trip to an empty room.
More often than not though it's just girls being a flirt (not that I an upstanding gentleman would ever reciprocate with this childish inuendo
).