What if I told you I haven't brushed my teeth for years?
Why would you not brush your teeth for so long?
I haven't since my girlfriend left me.
I'm sorry about that, but you should still brush your teeth. If you don't then you could bring irreversible damage to your teeth and gums.
I guess I should take your advice, because I think I look good
It's great to have high self-esteem and love yourself, but you need to take care of yourself hygienically. How would you feel if you saw someone who hadn't brushed their teeth for years?