Big Bang releases "Stupid Liar" teaser

Big Bang is coming back again! They just released a 30-second teaser of their new song "Stupid Liar", which will be released with their updated Tonight album. The teaser is a mix of rock and electronic just like the other tracks in their album. The teaser does not reveal too much as Big Bang chants: "I'm so stupid" and "Liar". Where are they going with this? Does anyone know?