I think this is more of a spelling issue than a grammar one - but gurl instead of girl.
I know not everyone is a brilliant speller, but really, girl is not a hard one to learn!
If you didn't know how to spell a lot in my freshman class, you certainly did by the time you got out. If you spelled it alot you were assigned 100 sentences using it correctly. Separate was another favorite of my English professor's words - not seperate, aggh.
She wrote A Lot on the chalkboard (just like that) and if you got it wrong, Lord help you because you were going to be busy.