Just to get it out of the way, dubs checked.
See now, it's not that great of a story unless you really sell it.
The problem OP is having that they can't explain what made them order it.
Maybe they have roommates who are the kind of homophobic bros who would think that having a dildo makes you gay, though - they won't buy it in its present form, because it was still OP's drunken purchase.
But maybe what made OP order it is is the realization that at least one of them is probably only so homophobic because they're really afraid of how gay they are, and they wanted to give them this dildo somehow.
Like, this happens a lot. Most guys who really hate gay dudes hate how much they want to have sex with them.
I could imagine there are people for whom I'd be some kind of gay-bear-waifu, and it's really sort of tragedic, because it's probably the same experience that I have when I fall in love with someone who looks at me like some kind of automatic nope-out of a human in terms of the possibility of their ever being sexually attracted to them, and I feel bad.
But they should be able to fulfill their dreams somewhere, and so I genuinely wish the best for them.
They'd have to make some kind of production out of it - stage an elaborate prank that involves something worth having spent the money on it, and which just surrenders it to some kind of unspoken "now that the prank is over, nobody cares who does what with it" status, and then succinctly ignore what happens to it after that.
If it's found anywhere, then it's assumed that its presence was a temporary need in terms of whatever prank is next attempted, and nobody questions it anymore than that.
Of course, introducing that element into the household tacitly confers the support of gay stuff, and that's what OP is wrestling with.
So I say again: raucously and unapologetically supporting gay dudes does not make you gay anymore than fighting for womens' rights makes you a woman.