I have had it done once by my ex-boyfriend. I liked it until he tried sucking on my toes, that tickled way too much and I couldn't take it. I actually kicked him during it. That was when we decided he would only lick the soles from there on (which still tickles but not as bad and I can control my reactions better) as I am extremely ticklish under and between the toes and just could not hold still enough to let him keep trying.