Bit-Sing Share definition Flag To repeatedly sing a lyric or other short phrase from a song over and over, usually to the annoyance of others. variations: bit-hum, bit-whistle, etc. "if you bit-sing "I like big butts..." one more time, I will punch you." Bit-Sing by Mr Njorl February 25, 2009 0 0 Get merch Get the Bit-Sing mug. Buy Now — $32.95 See more merch