My therapist's favorite shrink joke:

Two therapists were on the elevator, having finished their work for the day. One of them looked worn to a frazzle, with his necktie askew, his hair rumpled, and his shirt all wrinkled. The other one looked neat and rested.

"How can you look so fine after having to listen to your patients' troubles all day? the first one asked the second.

"Who listens?" the second one responded.