Resting Pitch Face 

A facial condition, visually resembling the widely common "Resting Bitch Face" expression, however it only occurs when an individual is pitching or presenting a company, product or service on stage, in front of an audience.

Look at her! That's a legit resting pitch face right there!
Wow, that guy is clearly suffering from the resting pitch face syndrome.

Resting Pitch Face by LatvianUnicorn November 12, 2020

Resting pitch face 

a sullen or uninterested expression attributed to or unconsciously adopted by a sports person during a match

"Anthony Martial has such a resting pitch face!"

Resting pitch face by Matt Windle poet March 7, 2021