Why are the walls and the floor blue?
If it is because we are actually in a dumbell shapped room under the sea, but somehow floating in the middle of it then I would jump up and down, whilst keeping in line with the resonance, causing the whole dumbell room to fall on it's side and allow the cake to hopefull fall to my side (if it didn't get spiked or burnt)!
Hopefully that scenario has used 'Stupid' lava and thus it doesn't comply with the laws of physics! Otherwise jumping up and down I'd have really screwed myself over!