A chat bubble icon.
Benjamin D. Esham (<a href="//commons.wikimedia.org/wiki/User:Bdesham" title="User:Bdesham">bdesham</a>)
Created by <a href="//commons.wikimedia.org/wiki/User:Bdesham" title="User:Bdesham">bdesham</a> in Inkscape.  Based upon <a href="//commons.wikimedia.org/wiki/File:Chat_bubbles.svg" title="File:Chat bubbles.svg">Chat bubbles.svg</a>, also by bdesham.