to talk on two phones at the same time, e.g. a landline phone in one hand and a cell phone in the other, like mr. Drysdale in "The Beverly Hillbillies."
"Hold on, let me get my ringing cellphone, then I'll drysdale with both of you."
noun. A person who does not practice the common courtesy of putting a toilet seat down.
I wish my husband wasn't such a drysdale, I got my butt wet when I sat down in the toilet bowl.