To get or draw the short straw means to be chosen for something no one wants.
Poor guy. He drew the short straw this time. I'm glad I don't have to do it.
by rtilley October 15, 2013
A particularly inept student-teacher or teaching assistant; a reference to "drawing the short straw."
Wow, Toby is definitely a short straw. I can't wait until he leaves!
by Golf Delta Delta March 16, 2009