Vai Neymar is Portuguese for go Neymar, and the phrase is widely used online as a short fan chant for Brazilian footballer Neymar. Rather than coming from one clearly documented clip, it circulates as a reaction sound that creators reuse whenever a moment calls for support for the player. It is especially common in football edits, goal celebrations and fan-made hype videos, where its short length makes it easy to drop in repeatedly. Its lasting appeal comes from that simplicity: two words instantly signal backing for one of football's most recognisable stars.