Yeah course 

A catchphrase used mostly by Steven Gerrard

“How do you think you played today Steven?”
“Yeahhh course, I think that we were outstanding and played good football, yeah course.”

Yeah course by anonymous November 25, 2020

Yeah corse 

The holy way respond to literary any thing with minimum effort. This can also be used in text as ‘YEC’.

When saying ‘yeah corse’ to someone in person, people typically also start saying ‘yeah course’ in respect from of how honoured they feel.

Dave- “how was your day?”
Me- “yeah corse”

Yeah corse by RiverYehCorse September 17, 2021

Yahcourse 

A conjunction of the words 'yeah' and 'course'. Used when the two words are supposed to follow each other in quick succession in a sentence, and end up blending in with one another.

Person 1: Hey, you going to Paul's birthday party?
Person 2: Yahcourse!

Yahcourse by P1mp-My-Giraffe February 28, 2011