What appears to be a tongue-in-cheek social media movement to mark June 29 as a day to celebrate heterosexual pride has become one of the day's top online trends.

Hundreds of thousands of tweets have been sent Wednesday with the hashtag HeterosexualPrideDay.

If sexuality isn't a choice, then everyone should get a pride day. #HeterosexualPrideDay

— Kimberly (@SouthernKeeks) June 29, 2016

Liberals are all for total equality until you start tweeting about #HeterosexualPrideDay

— Caleb Hull (@CalebJHull) June 29, 2016

we have a #gaypride day & everyone celebrates, have a #HeterosexualPrideDay and everyone's enraged? I thought being tolerant was the deal?