A phenomenon that occurs during the act of fellatio, identified by the forceful exit of male ejaculate via the giving partner's nostrils.
Ed. A popular but dangerous misconception is that this phenomenon is caused by aggressive acts, such as striking, gagging, or causing the giving partner to choke. Actually, it is caused by placement of the penile head against the roof of the giver's mouth, toward the back of the throat, in such a manner that the male ejaculate is deflected up into the nasal passages.
Honey, you looked like an angry dragon!