A lion or a gerbil The lion, because by virtue of being a lion, a lion is an expert on lions.
She asked. "The side that pays your fee" replied the doctor.
TL;DR
A dandy lion.
Because they are always lion
You'll never have to worry about being in a long-term relationship.
Turn the udder cheek and mooooove on!
He fell into it.
A master master.