This is a woman who is usually in her early 40's who is considered a cougar or a "milf". She finds men in their 20s very sexually attractive and hooks up with them or dates them.
Tina said "Hey I saw Reenie at the bar with some young guy, Kevin last week."
Kara said "Really I heard she was hooking up with the new rookie cop, Mike".
Tina said" OMG, She is always with some cub. Reenie is a cubaholic!!!