Portmanteaus, who knew? Combowords

I thought the art of combining words like friend and enemy into frenemy came about fairly recently.  Not so.  “Neither” comes from not and either and “chortle” derived from chuckle and snort, according to this article.  Now “poopsock” is a newer one, defined as a sock to temporarily hold fecal matter.  (I have no idea, but it must have been done enough to warrant word status.)