Friend Constipation

I was having a hilarious dinner conversation with a dear friend recently.
Sensitive readers may not want to continue.
I was mentioning how sometimes I feel as if I have reached my friend cap, but then find the ability to expand.
I related it to a fat belly - you stuff yourself as full as you possibly can feel and then soon enough you are able to have just a little more and a little more.

Her response? "I have to poo one out first."