Top Definition
1. Energetic extreme sports term for getting together with mates and doing said extreme sports, such as kiteboarding and snowboarding.
2. A person who performs strongly in extreme sports such as kiteboarding and snowboarding.
1. "Surf's up, let's go for a whackjam"
2. "Surf's up, let's go find Whackjam"
by Intensity February 22, 2006
5 Words related to whackjam

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