Whose side are you on? The left is for the gays, I choose straight
By “left”, Nino means left-wing, pertaining to left-wing politics, a philosophy which believes in social equality; a position that opposes social hierarchies or inequalities in the social system, regardless of one’s circumstances. The left-wing is known for being active supporters of same-sex marriage, adding further to Nino’s line (“The left is for the gays”).
This line comes right after Nino asks whether you’re a red state or a blue state, and since socially liberal “blue” states support gay marriage, he uses clever wordplay to say he’s “straight (not gay, heterosexual)” — to further say he isn’t committed to either the right or the left sides of the political spectrum, and finds faults with both positions.
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