pressing glass
Being the first in line to wait for a gondola to open on a ski day; being pressed upon the glass gondola doors.
The forecast is predicting 16 fresh new inches of snow for tomorrow, I will definitely be pressing glass!
face pressed against glass
When someone presses their face against glass/window. People sometimes press their face against glass so they can make funny faces since you can see your face getting squished on the other side.
He looks funny when he's got his face pressed against glass.
pressed ham on glass
When an individual, or a group of individuals, press their naked buttocks against a window, preferably a restaurant or somewhere where there are many patrons to shock.
Did you see the faces of the diners at the coffee shop when they saw Joe's pressed ham on glass?