There are nip slips, and then there are nip slips. The former are often dubious, involving a shadowy bit of something that's maybe a glimpse of areola; the latter are full on instances of nippleage (bead and all) escaping from the confines of a woman's top. Geri Halliwell (who is not known for her modesy!) has let loos with a nip slip of the second kind...and we, for one, will never be the same again.
· Via Taxi Driver Movie (taxidrivermovie.com)