Big fleas have little fleas upon their backs to bite 'em.<br>
And little fleas have lesser fleas, and so <i>ad infinitum</i>.
<a href="https://en.wikipedia.org/wiki/User:Unbuttered_Parsnip" class="extiw" title="en:User:Unbuttered Parsnip">John Martin PERRY</a>
<span class="int-own-work" lang="en">Own work</span>