1. When a person is about to do something really important and they fail to do whats necessary.
2. To Bitch out when duty calls.
Alex was about to skydive and then he had a biglow moment; thus, he lost control of his bowels while in the plane.
by Boy-d May 10, 2008
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Smoking hot girl with a beautiful body and an amazing personality to match. Bound to make any person dating her to thank the heavens to be graced with such a goddess.
Maddie Biglow...im at lost for words, her beauty just stole my breath away.
by McAnoman September 09, 2009
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when a girl shits in a fat guys mouth then the malibeau proceeds to eat the girl out with the shit still in his mouth and filling the vagina with the shit then using the shit as lubricant during intercourse
damn that girl nani is a freak she gave me the best dirty biglow of my life! i couldnt believe it
by lucky luigi October 16, 2009
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