They have a lot of patients
Let's just say I'm starting a lot of sentences with "let's just say".
They have a lot of moo/neigh.
When they run out of patients.
What ails you?
Doctor: It depends, how old are you Patient: I will be 24 soon. Doctor: Pffff, no you won't.
I can clearly see your nuts!
Because it lost it's temper.
A sour kraut.