I don't know if it was the adrenaline from earlier or what but that pic had me in tears i was laughing so hard. probably because that busniess is serious lol
Looks like the male is trying to herm on ya, the shaking is trying to assert dominance, if they are both doing it you may need to get a smaller clown that isnt sexually mature to have a male.
Gale or Andy will be able to tell you for sure.