What is Sidetailing?
1.
When a female dog or cat is in heat or attracted to a male they will turn the tail to the side, showing the genitals as a gesture to show they are interested sexually. Men will use this term with other men when they notice a woman checking them out or being slutty.
"Hey man, that chick over there is totally sidetailing"
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1.
Someone who's never browsed and or heard of slangdefine
You've never been on slangdefine?!?! God you're such and urban-v..