There are several varieties of Tim Tams including Original, Chewy Caramel, Mocha, Double Coat and Classic Dark Chocolate and a constantly changing range of special edition varieties.

The existence of the Tim Tam has given rise to the phemomena of the Tim Tam Slam or Tim Tam Explosion. This practice basically involves biting off opposing corners of the Tim Tam (which is a oblong shaped biscuit) and then using it as a 'straw' to suck up a hot beverage (usually tea or coffee) and then, just before the biscuit falls apart, it is placed in the mouth. The sensation of the Tim Tam 'exploding' in the mouth has been described by some as a near orgasmic pleasure and leads to very fast consumption of biscuits. Connoisseurs believe the Chewy Caramel variety is best for performing the Tim Tam Slam since the caramel centre helps to hold the biscuit together for a slightly longer time.

A Tim Tam Slam has been sucessfully performed by Natalie Imbruglia on the Graham Norton television series in the United Kingdom.

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