cart horse 

A big sturdy black fellow that looks like they can pull a cart with no problems.

That boy is built like a big cart horse.

cart horse by Derek Beardraven May 7, 2018

putting the cart before the horse 

Doing things in the wrong order.

"She's buying a lot of new furniture before she has a job. She's putting the cart before the horse.

putting the cart before the horse by KeeganBM June 1, 2014

cart before the horse

Putting the cart before the horse is doing something in the opposite or reverse order, as in "Don't put the cart before the horse."

He put the cart before the horse when he bought the house before he got the loan."

cart before the horse by Jack Hayslett September 17, 2008

Showing the horse and cart 

To show one's age. When an older person makes a comment or action that refers back to times long since past and shows just how old they are, generally alienating the younger generation a bit in the process.

My grandfather made a reference to Howdy Doody today. Man, was he showing the horse and cart.

Also showing your age

Showing the horse and cart by JacintaK July 6, 2009

horse and cart 

Another of the many rhyming slang phrases for fart.

Gor luvaduck Phyllis, you should 'ave 'eard me 'usband after 'e came 'ome from the pub last night, wot a bleedin' horse and cart!

horse and cart by David from Kingsbury October 17, 2005

carthorsing

Acting in a heedless or foolhardy fashion, particularly when it comes to romance. From the idiom "putting the cart before the horse."

I know inviting her to move in after the first date is totally carthorsing, but I've never felt this strongly about any girl I've seen naked.

carthorsing by chinesedentist February 4, 2012