In the episode, "Pardon my glove," Ralph thinks that Alice is cheating on him after Ed finds the glove hidden in the draw. To catch her in the act, him and Ed wait out on the fire escape and look in the window. After the man asks for his glove, Ralph yells, AHA, And tries to get through the window. If you watch his hand as he holds onto the window, his hand goes right through where the glass should be.