With the help of Team "Better Name Than That"'s unofficial and self-proclaimed leader, Golf Ball, and with the help of her broken rocket ship and Blocky's strength, you guys were able to be one of the first teams to win the challenge as Golf Ball presented the emerald to Four.
Since your team just had to wait for the other teams to complete the challenge (which might take a long time), you all were just hanging out with each other. Your brother, Tennis Ball, was talking with his friend Golf Ball when a team underground was being chased by lava that another team accidentally dug out and leaked. Golf Ball started yapping about her usual nerdy things that a bossy bot like her would usually say, something about "deviations"...whatever that means. Your brother thought she was flirting with him since the lava got so close to the surface that the ground started heating up and he thought Golf Ball was making one of those flirting jokes, but of course she won't actually think of doing that consciously.
After Golf Ball thought of an explanation for why this might happen, she concluded that this team who caused the lava to go right under the surface values avoiding her more than their own safety, and therefore decides to hinder their efforts to return back to the surface so that she can get them up for elimination. With Golf Ball having her fun making the team underground from getting up to the surface, you saw your brother just looking at her with an annoyed look. You ask if this is the kind of "fun" Golf Ball does.
Sigh. Yep.