[With apologies to Jeff Foxworthy]
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You know she's a pro when:  
- She prefers PPM without being asked.  
- She says she can "host"
- All her pics are in lingerie
- You can see hard nipples in at least one pic
- She tells you her availability in her profile  
- Her phone number googles up escort ads
- Her profile mentions WhatsApp
- She says she's a model and her pics aren't on IG
- She's Russian
- She wants to meet NOW
- She's "living" at a motel
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Note: Nothing wrong with sugaring a pro. Just different - maybe better - maybe not.  
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Feel free to add more...  
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Life is good.
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The Cat