To be fair you have to have a very high IQ to comprehend the complexities of "Your mom gay". You see there is the mocking of sub-standard non-intellectual bro culture which is homophobic in nature. Secondly, there is a truly meme-worthy dialectical mistake which renders the "roast" useless "Your mom gay" but that would mean that said mother would indeed lust for, become aroused by, and engage in reproductive or sexual intercourse with the male sex which would indeed make "Your mom" heterosexual. This is truly a marvelous call back to philosophy or its critics of language. You see "Your mom gay" highlights that language doesn't truly reflect and convey how people think. This is an awe-inspiring critic of semantics and I'm sorry that a simplistic primate such as yourself who is still stuck in the "Homo Erectus" of the evolutionary cycle need a true intellectual such as myself to explain that to you. I pity the ignorant fools who don't understand this amazing dialectical critic.