A euphemism for throwing up.
Dude, this kid in my class got sick and totally rainbow smiled alllll over the room. He couldn't even make it to the bathroom!
লিখেছেন- El Chin Chon 6 de ফেব্রুয়ারি de 2009
1 more definition
to smile out of happiness while crying of sadness
she had lost all hope, but love in friendship made her dawn a rainbow smile
লিখেছেন- audiodecoy 4 de এপ্রিল de 2005