A blonde goes to an office party and wins...
A blonde goes to an office party and wins a thermos.
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The blonde asks a co-worker, "What does it do?" He says it keeps hot things hot and cold things cold.
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The next day the blond goes to work after filling her thermos with ice cream and tea.
http://www.jokes.com/funny/blonde/a-blonde-goes-to-an-office-party-and-wins---