Is there any difference in meaning between the following sentences ?
- Como estás viejo!
- Como estás de viejo!
I have heard the latter in the TV series Narcos and it sounded odd to me. Context: Pablo Escobar is a fugitive from the police, but he decides to stroll in a Medellin park anyway. Pablo sits in a bench in the park and he fantasizes that his dead cousin Gustavo comes to talk to him. Pablo tells him that he has turned 44 years the day before and Gustavo answers "Como estás de viejo, Pablo!" .