Toe Sucking is formed by having a Foot Fetish
usually by males but females also. It is where the person sucks on someones toes and tickles it with their tongue the big toe is usually the one in wich this act takes place but also some go all the way licking and sucking all five toes, for women always on the receiving end masturbate while their toes are sucked, giving them more sexual pleasure.
This girl i know came to my house we both knew why we where there i was expecting some ordinary sex but she had something different in mind,it was a hot night about 28 degreese and she took off her heels and slowly placed her feet in my mouth, i sucked them and licked her soles as she moaned and squeezed her niples. - This is were i found out how goot Toe Sucking is.