The free edge of the fimbriated fold occasionally exhibits a series of fringe-like processes.

Some people have small (<1 cm) horn-like triangular flaps of "skin" (mucosa) under their tongue.

They typically appear in pairs and may even be up to 4 or more sets, but for even those who have them only two closer to the tip are distinctly visible while the others are very minor or just small bumps.

They are normal residual tissue not completely reabsorbed by the body during the development and growth of the tongue.

This article incorporates text in the public domain from page 1125 of the 20th edition of Gray's Anatomy (1918)