Green’s Dictionary of Slang

1. (US drugs) in desperate need of drugs.

1992		T. Williams Crackhouse 67: When she looks back at us, her eyes are lost – she’s ‘thirsty’ for crack-cocaine.
1995		(con. 1985–90) P. Bourjois In Search of Respect 102: I hate it when this nigga’ gets thirsty.
1997–2000		College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Thirsty (adj.) Exhibiting extreme desperation.
2012		‘Dutch’ ? (Pronounced Que) [ebook] Them dudes blowin’ him up because they thirsty. Probably ain’t nobody down there to connect wit’.

2. (US campus) eager for (sexual) attention.

2014		C. Eble (ed.) UNC-CH Campus Sl. Spring 2014 15: THIRSTY — lustful, eager for sexual attention: ‘Look at her dress—she is so thirsty’.
2017		hubpages.com ‘Roadman Slang 4 Jun. 🌐 Thirsty - used to describe someone desperate for attention.
2019		www.verywellfamily.com/a-teen-slang-dictionary 10 Mar. 🌐 Thirsty - Trying to get attention.