The crossroad on Pushkin and Parpetsi in Yerevan is really a crossroad of cultures. Here you can find some underground life and some (overground) Syrian-Lebanese-Armenian fast food closeby. A great place to drink and, once hungry, go and eat something. Or the opposite.
One of my favorite pubs is Calumet on Pushkin street. I have written a separate post about it. It has been a fresh air of diversity for me. It is known for many things — its famous, tasty fries, pizza, music, etc, as well as the unbearable smoke inside. But the laws will soon regulate this and it smoking inside will be banned. So, attending Calumet more often won’t be harmful for your health.
Once you are drunk enough, there are a few spots nearby to go for some quick food. For example, Pitstop with middle-eastern types of sandwiches or 3 Bros across the crossroad with some mixed cuisine and tasty burgers (including for non-meat eaters) and chicken wings.
A reminder: this crossroad is still hosting residential buildings, so one can hardly sing aloud in the streets after drinking hard. But I want to believe you will have an amazing time in one of these pubs anyway. Just make sure you’re also mindful of your personal belongings.