<p>"If either of you guys needs a ride, let me know and I will pick you up."</p>
<p>This sentence is grammatically correct, right? Cause I'm not sure if the first clause is correct; Since "guys" is plural, "needs" should be "need." But, since the speaker is referring to "either of you", as in one or the other (singular), then the sentence is correct as it is.</p>
<p>Yes, that sentence is grammatically correct. “Either of them is” is correct; “either of them are” is incorrect. In informal speech, however, you frequently hear the incorrect one said. I am personally fine with either construction; in fact, my instinct says “neither of them are…” but the grammatical (technical) part of my mind corrects that to “neither of them is.” One thing I do know for sure is that in either…or and neither…nor constructions the number of the verb and that of the closest noun coincide: “Neither your brother nor your parents are rich.” “Neither your parents nor your brother is rich.”</p>