When you are pleasuring your girl (i.e. wife, girl-friend, female friend with privileges, local slut, myspace whore.....) and your thumb "accidentally" slips into her asshole instead of her vagina.
Sorry it was a Slip of the thumbs its not like you havent had anything bigger in there.
Prices shown in USD.
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.