Coming in with the Deep Lore(tm): In Triclops culture, some light, consensual nibbles are considered very romantic, but actual biting is highly taboo!! He's a big tough guy so it didn't actually hurt that much, but YOU GOTTA KNOCK BEFORE YOU JUST BARGE INTO A MINER'S DORM!!!! 

This conversation happened at some point before Andy skedaddled. He is an easily flustered man. 

And hey! HEY! Obligatory Kickstarter bump!! We're coming up on the halfway point of the campaign, so now is an ABSOULUTELY PERFECT time to check it out! 

https://www.kickstarter.com/projects/1940139969/robber-robert-chapter-1