This is extremely late, but I’m pretty sure Dylan is trying to imitate Joe getting frustrated at something while on his computer. Like, maybe he was playing a game but lost, or something just frustrated him while he was surfing the web. Which is honestly the most relatable thing.
Love them on stage! :) Fellow Starkids I want to draw your attention to the interview of Team Starkid on the channel 'die geek show show'. They are hilarious in it!