This is a parody of the original "Over 9000" joke. Nappa asks what the subscriber count is, Vegeta replies that it is 9010. Vegeta then continues to scream "It's over 8000!!" before crushing his scouter. Nappa says "Vegeta you didn't do it right", Vegeta replies with "Yes I did Nappa. Yes I did." Since "over 8000" is how it is said in the original manga.