What was the name of XXX mother?
Loki
Loki tells Njörðr to be silent, recalling Njörðr's status as once having been a hostage from the Vanir to the Æsir during the Æsir-Vanir War, that the ``daughters of Hymir'' once used Njörðr ``as a pisspot,'' urinating in his mouth (an otherwise unattested comment).