If this isnt a hard limit for you, which if it is, as Oz suggested you should really review the "how to say no" /sfae words/ hardlimits sections etc.

Is he willing to reciprocate??

lol just saying you should lick it before you stick it right. If he likes a tounge back there, who knows what else he may wish you to "use". Be careful! Mabey he is wanting you to get a strap-on to use on him someday too.

I used to have a hang up about shriveled old nasty hairy virginias once upon a time, but with some help from an old hairy virginia bearing domme's whip I learned to enjoy it, winks and giggles my way out of the thread.

You wont know if you lick, erI mean like licking it until you lick it anyways.