The phrase "fun bit" refers to the enjoyable or exciting part of something. It means the part that is engaging, entertaining, or brings joy or amusement. Full definition
It is also a great time to start looking around for fun bits and pieces of ribbon or things you can use to wrap presents. (theinspiredroom.net)
A great read, accompanied by fun bite - sized comics that can be easily read while nursing or while baby naps, this is a book that new moms are sure to love. (pregnancymagazine.com)
The only fun bit was telling people you were breastfeeding twins, they looked pretty shocked and always wanted to know how! (twiniversity.com)