(Cheektowaga is a predominantly Polish-American suburb of Buffalo, New York.)
A sex act that involves a man fingering a woman like a bowling ball (bowling is very popular in Cheektowaga), followed by ejaculating in her face so she sees nothing but white (the blizzard itself), then taking a large dump next to her so she can be “next to Depew.” (Depew is a town next to Cheektowaga.)