A term given to a long and deliberate expulsion of gas from the anus after a meal, mainly a roast rich in veg, such as Christmas dinner etc, usually performed when in the company of others.
Example 1
Ted-Hey guy’s if you would like to raise your glasses, I have an after dinner speech to make.

Example 2
Wendy-We all had a lovely meal last night and then we all thought Ted was going to make a fitting after dinner speech when he stood up…But he just farted.
by KEJIAN March 2, 2009
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