wet llama Share definition Flag A party pooper. Someone who doesn't just rain on the parade, but yet shits on it. A genuine downer. "I asked Trent if he wanted to rage at a party but he said 'no'. He is such a fucking wet llama bro, why do we even chill with him?" wet llama by Your a neuron April 19, 2017 0 0 Get merch Get the wet llama mug. Buy Now — $32.95 See more merch