frusband
a single woman's male friend who functions as her husband.
He came and shoveled my car out of the snow. He is such a good frusband.
frusband
A married woman's single friend who she hangs out with when her husband is at work or unavailable.
I invited my frusband to dinner since Dave is on night work.
frusband
your girlfriend's husband
My frusband has surprisingly never asked me to help him pick out a gift for his wife.