Bought new tooth brushes a month ago. Txt my husband and said yours is the blue. Mine is the green. He got out of the shower the other day and came out brushing his teeth with the green tooth brush.  I said ughhh have you been using that toothbrush the whole time?  He said yes, why?  I died. I said that's mine! We had been using the same toothbrush for a month.  Soo gross yet so funny. 😷😂