(Headaches of solo parenting) x (4 kids) x (1.25 standard Mike exaggeration) x (1.40 exceptional circumstances “Seriously? I gotta cover the playgroup too?” exaggeration) x (1.75 ridiculous circumstances “You Volunteered And Took Vacation For This?” exaggeration) x (square root of “You Do Realize That None of My Friends Who Are Parents Do Anything Remotely Like What I Do?”) = story I tell Erin about how awful the past two nights have been.