They deliver
Are you writing down everything I'm saying ! IS THIS GONNA BE A SONG ! !" -anyone dating Taylor Swift
A: One to read one to write and the other one to keep an eye on both intellectuals.
He had a bit of a puzzle in his hands
A bird who knocks before delivering its message !
Because he screwed up the delivery...
A Klingon! since obstetrician gynaecologist is too long, and OB GYN doesn't make sense ,lets call them Klingons