The act of taking a shit on somebody's tummy area and then burying one's face in it and then blowing hard, making a satisfying farting sound.
I took a shit on Fred's tummy, rubbed it in a little and then I pressed my face in it and blew real hard, making a farting sound. Fred giggled. That's what I call giving a Dirty Zerber !!
av TechShopBoyz 3 juli 2011