Is it normal to be turned on by this??

So I have heard of erroganous (sp) zones but I don't know if this is normal or weird..? I get turned on by guys squeezing the sides where my leg bends (like right above the knee, the beginning of the thigh i guess).... a guy I liked the most out of all guys was the first to do that and i don't know if it was because i liked him so bad but it was almost orgasmic for me. Also i get super horny if guys nibble my ears or touch my hipbones.... is this normal??!