Have You Ever Had A Day Where You Were Completely Off?!

I work for time warner cable customer solutions representative & so I'm on the phone all day at work. But today it seems like I can't get it together like mentally I'm not at work. I feel like I'm spacing out randomly& I got enough sleep last night but I'm just not on my A game today lol I don't understand what's wrong with me but I feel mentally slow today. I can't help but laugh at myself. Omg ! I need today to hurry up so I can go home haha