stag and doe
a wedding shower that includes men and both sides of the wedding couple, not just the bride; see jack and jill or jack & jill
My wife and I went to a stag and doe last Saturday for Greg and Julie who are getting married next month.
a stag-n-doe
a party where, all the invitees, both male and female, are single.
I have never yet been to a stag-n-doe, have you?