Mildly insulting phrase denotes silly behaviour, actions or thoughts usually attributed to a child or immature person.
"Don't get angry at your little bro., he did not mean to pull your hair, he is a two-year old bird brain"
by Muyuna December 11, 2004
by aymeryia March 04, 2009
A person who has a very short memory or attention span.
Came from birds who after strutting, pauses and acts like nothing.
Came from birds who after strutting, pauses and acts like nothing.

via giphy
by Kay Tutan Tayo December 03, 2018
by JQPublic April 05, 2010
really dumb and ugly males who scratch their testicles al day long and like to interact with other bird brains. Hobbies include xbox,shooting,talkin about xbox and talkin about shooting...NOW NOW NOW NOW
by non bird brain January 27, 2011
Trending RN - February 17, 2019
- 1. Quag
- 2. Corncobbed
- 3. Crain
- 4. Boca
- 5. slopey shoulders
- 6. cutting cucumbers
- 7. D hole
- 8. MDP
- 9. McPounder
- 10. pipe game
- 11. UDAY
- 12. RUH
- 13. ojete
- 14. Dibby
- 15. Lukaku
- 16. Stealthing
- 17. could Jesus microwave a burrito so hot that even he couldn't eat it?
- 18. cold shower
- 19. take a cold shower
- 20. Chloe
- 21. Onionboy
- 22. muscular soldier
- 23. Crispy Boy
- 24. FGF
- 25. Octopus Girl
- 26. Grass mud horse
- 27. Diba
- 28. ntmy
- 29. so sad
- 30. truffle shuffle