Yup! Happened here in Brazil, specifically in João Pessoa, Paraíba.
http://g1.globo.com/pb/paraiba/noticia/2013/10/detento-faz-mascara-de-sabonete-com-rosto-de-agente-penitenciario-na-pb.html
According to the source, the prisoner is an artist and was trying to “honor” a prison guard, that was a friend of his.
