The exact origin of this clip is not documented, which is common for short voice memes traded as WhatsApp audios in Brazil. The humor comes from pairing a familiar children's character, Bob the Builder, with a very adult excuse for doing nothing. Phrases like tava dormindo work as flexible reaction audio because they are short, clearly spoken, and instantly understood. On soundboards it sits alongside other Portuguese excuse and reaction memes, saved and replayed whenever someone needs a funny way to admit they were inactive.