To show up at the last minute, after having not participated for an extended period; subsequently scamming free food, drinks, rides, etc. from other event attendees.
I haven't seen him in months, then he shows up, catches a ride out of town and makes us stop for Corn Nuts. He totally Schulered me!
N. A mooch; someone who wants something for free; a freeloader.
V. To mooch; to freeload.
Last time I invited him along, all he did was schuler all weekend.
He wouldn't buy his own Corn Nuts? What a schuler!