Meaning of the word "bees that have honey in their mouths have stings in their tails" in English

What does "bees that have honey in their mouths have stings in their tails" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

bees that have honey in their mouths have stings in their tails

US /biːz ðæt hæv ˈhʌni ɪn ðɛr maʊðz hæv stɪŋz ɪn ðɛr teɪlz/
UK /biːz ðæt hæv ˈhʌni ɪn ðeə maʊðz hæv stɪŋz ɪn ðeə teɪlz/
"bees that have honey in their mouths have stings in their tails" picture

Idiom

used to warn that someone who appears kind or speaks sweet words may actually have hidden malicious intentions

Example:
Be careful with his flattery; remember that bees that have honey in their mouths have stings in their tails.
She seemed nice, but I soon realized that bees that have honey in their mouths have stings in their tails.