This came from something said in a math class in Cedarbrook, which has traveled around to several other places and schools in the Philadelphia area as well. You hear it more often than you did back in January, but it may still be a silly saying from the girl who started it.
"Ew, that kid keeps staring at you."
"Haha, he has that Obama Crush going on!!"
"Guys stop! He does not!!"