When a gentleman caller tries to impress his female counter-part by engaging in behavior that would typically be more understated in normal situations.
Kevin: Look at Matt yelling at the TV like an idiot. He barely even likes baseball.
Ray: I know. He's just show-horsing because his girlfriend is here.
Ray: I know. He's just show-horsing because his girlfriend is here.
by Jack Parkman November 04, 2009

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
Also showing your age
by JacintaK July 06, 2009

The plastered bright toothy smile of Meghan Markle . Correct use of (Show Horsing) is to hold the smile in whatever event one is at to include: garden parties ,bank robberies, funerals, catastrophic life loss, and speaking events.
Meghan Markle attended a memorial service for a school shooting and the bitch was "Show Horsing" all the time.
by Stinky1911 July 28, 2023

james Was hanging Christmas wreaths on a ladder on the front of the house, he dropped the wreath, and I got show horsed
by JoeJoeDPlate December 13, 2019

by Mello jello March 03, 2015

When a Gay man dates or even marries a woman to distract from his obvious relationship with another man. This is from the fact that a show horse isn't typically the one ridden the most.
"Yo, have Steve and Claire even slept together?"
"Dude, don't you know? Steve is totally Show-Horsing, he's been going out with Matt for months"
"Dude, don't you know? Steve is totally Show-Horsing, he's been going out with Matt for months"
by Danchisco12 March 26, 2021
