The line comes from Eminem's Lose Yourself, released in 2002 as the lead single from the 8 Mile soundtrack. The full lyric opens with His palms are sweaty, knees weak, arms are heavy, describing stage fright before a rap battle. The song became one of hip-hop's biggest anthems and a cultural shorthand for pressure. Online, the isolated vocal became a meme staple on TikTok, YouTube and sports edits, used to caption nervous moments. Its clipped delivery and universal feeling keep it relevant for creators two decades later.