What does it mean when a guy says 'Easy Tiger'?

My ex boyfriend and I were in the common room at uni the other day with one of our mutual friends and I was talking to our mutual friend on the couch and he gave me a compliment as my ex walked past and my ex turned to him and said "Easy Tiger."

Wtf does that mean?
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+1 y
I want to know if this is him supporting his friend with the compliment or is he saying he doesn't like it?
What does it mean when a guy says 'Easy Tiger'?
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