There are people who are friendly with lions and other big cats but they are usually well known to the lion and the cat used to being around humans from birth, such as in areas where there is conservation of the species.
I've been watching a series on ITV on Sunday nights called, ''The Story of Cats'', which is absolutely fascinating. It shows wild animals and domestic cats. Last week there were species of big cats I had never seen or heard of as well as lions, cheetahs etc, and some of them were playing with humans. Last night my cat was watching the programme with us and was a bit freaked out, especially with close ups of the cats and the noises they made. That was quite funny.
Floo - don't!!!