“What’s come over you?” is an expression not to be taken literally, but there are jokes. This was posted on the newsgroup rec.humor on March 23, 1994:
 
Patient: Doctor doctor, I feel like a bridge!
Doctor: What’s come over you?
Patient: 12 cars, 2 bikes and a bus.
 
       
Google Groups: rec.humor
Lack of Humour.
Gavin Adrian
3/23/94
(...)
Doctor doctor i feel like a bridge
what’s come over you
12 cars 2 bikes and a bus
   
Google Groups: rec.humor
Doctor, doctor
David Bridges
7/17/97
(...)
Doctor, doctor, I feel like a bridge.
What’s come over you?
Two cars and a bus!
 
Google Books
Shadowing Hannah
By Sara Berkeley
Dublin, Ireland: New Island Books
1999
Pg. 115:
Doctor doctor, I feel like a bridge. What’s come over you? Oh, cars, buses, taxis…
   
Google Books
Under the Bramble Bushes, Down by the Sea:
Folklore and the Formations of Identity on the Playgrounds of Belfast, Northern Ireland
By Donna Michelle Lanclos
Thesis (Ph. D. in Anthropology)—University of California, Berkeley, Fall 1999
Pg. 125:
Doctor, Doctor, I feel like a bridge.
What’s come over you lately?
Two trucks and a car.
 
Twitter
jeffjohnson14
@jeffjohnson14
Doctor! Doctor! I feel like a bridge!
What’s come over you?
7:52 PM - 19 Sep 2008
 
Twitter
Lisibo
@lisibo
@digitalmaverick - Doctor, doctor, I feel like a bridge.  What’s come over you?  Five cars a lorry and three trucks!
6:13 PM - 21 Feb 2009
 
Twitter
Lisa Jo (Taqai)
@LisaKS719
Replying to @enigmaticmagpie
@the_magpie I said to him, “dr, dr, I think I’m a bridge” He shakes me &says “what’s come over you?!” I said “14 cars, 3 buses, and a truck”
3:12 PM - 7 Apr 2009
     
Google Books
Medical Jokes & Humour
By Clifford Sawhney
New Delhi, India: V&S Publishers
2011
Pg. 68:
Bridge Syndrome
Patient: “Doctor, I feel like a bridge…”
Psychiatrist: “What’s come over you?”
Patient: “Two trucks, five cars, three tempos…”
 
Twitter
You Are Joking
@lahlahbean
#badjokefriday
Doctor, Doctor I think I’m a bridge.
What’s come over you?
Oh, two cars, a large truck and a coach.
3:45 AM - 15 Mar 2019