This is <span class="username-with-symbol u"><a class="u regular username" href="https://www.deviantart.com/heileejoe">HeiLeeJoe</a><span class="user-symbol regular" data-quicktip-text="" data-show-tooltip="" data-gruser-type="regular"></span></span>'s Erin. She is like the inverse of your usual conjoined twins, having two bodies joined with one head, which is highly interesting. Here she is, piggyback riding herself. It is by no means an efficient use of her legs, but it does make it much less likely that she'll accidentally&nbsp;kick her own front heels, so it does have some merit.&nbsp;