Meaning: people who are friends with you in your good times but not with you during bad times.
Example: Wilma said, “Tracy is really outgoing and friendly. She willingly helps everyone and likes to make new friends.”
Wilma’s husband said, “Good for her. I wonder how many of them will be her true friends. Most of her friends look like fair weather friends to me. They have a nice time at her expense.”
Wilma said, “I noticed that too. I just hope she realizes that.” Wilma’s husband hoped so too.