Top Definition

Actions or behaviour befitting everyone's favourite cartoon sponge such as blowing bubbles, hollering "I'M READY!", being unreasonably enthusiastic about your job & making up & singing songs on the spot.

Spongebobbery can fall just about anywhere on the spectrum of good & evil.
Example 1:
Person A: Hi, Person B! What are you doing today? I'm going to work four shifts back to back! I can't wait! Today is the best day ever! I'M READY!
Person B: What Spongebobbery is this? Go away!

Example 2:
Person C comes upon Person D blowing bubbles with alarming skill.
Person C: What Spongebobbery is this? Can you give me a bubble blowing lesson?
by The venerable lady M. Jane April 07, 2011
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