Contextual Analysis of "i start laughing" in Lyrics

belive it or not. i just started laughing. shaking my head. and just kept on laughing. thinking about all the things i had been through that day. then cries what why do you have that smile upon your face. then i laughed out said thinking about the things that i've been through. she wipes her nose and she sniggles and laughs out i've been through it too. then i start laughing again. and she start laughing more. then next thing you know we both are cracking up on the floor. she laughs i can't believe this idiot really answered my phone. now meanwhile twan just got out of prison and he's on his way home. then she laughs baby i'm sorry for all the lies and all the bullshit. then i say girl just wait till i tell you all the drama that i've been dealing wit. she laughs i wanna hear it all. then i laugh and say baby first of all. i got a hangover