Green’s Dictionary of Slang

heather c n.

[? film Heathers (1988)]

a fat, ugly person who stutters.

[US]College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Heather C. {likely to be offensive} (noun) A fat, ugly person who stutters. Usually this person would wear tapored jeans or stretch pants. A ‘heather c.’ has no friends or any sense of style at all what so ever.