1.When an infant unexpectidly urinates on you during the breif period in between changing diapers
2.Baby penis
I was changing him yesterday when he got me with his diaper viper
by cltobin October 22, 2012
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When you lay a mad heat log that is long and smells like it was injected with venom.
Holy shit man! I went to use the bathroom and someone left a huge diaper viper coiled up there.
by dirtymurbag September 17, 2021
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