You and Mark were having a fight over the fact that you took Mack to do a task with you instead of Mark, which pissed him off greatly. He poured with his arms crossed while he had the voice of a pouty and upset toddler, it was kind of cute but you had to stand your ground as the Captain... Literally and figuratively.

"Do you like him more than me, or something?! Ohhh, I bet you just LOOOVE him! Don't you, Cap'n!?"

He stood there to see if he was affecting you in any way