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2.
intercourse with an obese woman. A man must dig through the fat in order to find the vagina.
"Brian just pulled a fat bird", "Well i guess he'll be digging for clams tonight".
by milkjunkie90 December 10, 2010
 
1.
Female masturbation.
"Jeremy was out of town, so I went digging for clams."
by Abject Failure June 21, 2009