The phrase comes from informal Mexican Spanish, where 'no mames' expresses disbelief, 'pinches' adds emphasis, and 'wey' is a casual way to address a friend, roughly like dude. No single creator or original video is widely documented for this clip, so it is best understood as a piece of chat slang that travelled as a short WhatsApp voice note. Spanish-speaking users forward it as a quick, funny way to say they cannot believe what they just heard, which is why it keeps appearing in reaction videos and group chats.