The glaring is fine; Loki's used to glaring. Everyone glares at him, even people who like him. It's the smiling that's unnerving, especially coming from someone like Steve Rogers. He kind of. Sidles over to the bar, and raises an eyebrow at Stark.

He gets a little nod and shrug of 'go for it', and so helps himself to a drink.

...his poor phone. :( :( :(