The phrase comes from the Brazilian Portuguese dub of Scooby-Doo, the long running animated series about Shaggy and his talking Great Dane. In Portuguese Shaggy is called Salsicha, which is why the clip circulates with both names attached. Fans cut this gentle reassurance out of its episode context and reused it on social media as a reaction line. Its humour survives without the scene because the contrast is clear: a famously cowardly dog being talked down by his equally cowardly owner, making the comfort sound charming but not entirely convincing.