There are 3 definitions
1.Smile u give when ur checking out a girl
2.Smile u give to someone u like
3.arrogant smirk when ur trying to be a smart-ass
:)
1."i seen u checking her out,u have bonersmile on ur face"
2."dude i think she likes u,she gave a big-ass bonersmile"
3." bitch stop being such a smart-ass,take off that bonersmile"