1 definition by SpaceAce21
A person who is typically and consciously heterosexual, until under the influence of drugs or alcohol in a social gathering. If aroused under such influence, this person ceases to care about their 'sober' identified sexuality, likely only initially identifying as 'straight' due to social grooming and/or having a tendency to favor the opposite sex.
"John is straight, right?"
"He says he is, but once he starts drinking he hits on guys too."
"So John's a Party Bi?"
"At the very least."
"He says he is, but once he starts drinking he hits on guys too."
"So John's a Party Bi?"
"At the very least."
by SpaceAce21 March 13, 2017