I'm going to the bar without my chronically late friend
Are you planning on meeting somebody there?
Yes, I have a date there with an attractive girl.
There's nothing wrong with going on a date with someone you like. You don't need to spend all your time with your friends.
I'm not late to work and made fun of my friend forever. I don't care about him.
I can understand how you get frustrated a lot when your friend is always late, but it's not nice to make fun of him. There could be things going on that cause him to be late. If it's a big issue you should talk to him about it.