Otter’s pocket are waterproof so when someone exclaims that “<insert noun> is wetter than at otter’s pocket!”, they are are actually saying that it is “no big deal. Move on.”
Your mare when she sees me. I am the ultimate horse chad and no mare can hold the fountain of lube when it sees me and realizes she is about to have a VERY good time with me. Her pussy is soaked and her clitoris jumps, as if she is in heat.
Your mare: *sees me*
Me: ah yep, she is unimaginably horny already, just as i expected, even wetter than an otter's pocket.