Surrealism
'I do not understand, Captain,' Thor insists when he and Steve are on a sightseeing trip. 'You are saying that such creatures do not reside in Midgard?'
'No, they don't,' Steve murmurs, staring at Dalí's The Temptation of St. Anthony.
'Why did the painter create such strange monsters that would not be able to live in any existing realm? What is the purpose of this?'
Steve takes a moment to reply. Surrealism was before his time; he was familiar with it, but it doesn't mean that he knows how to explain it. He knows the definition, in the absence of all control… but he doesn't think it'll mean anything to Thor. It means little to most humans / Midgardians. Steve feels the movement, as an artist, and appreciates how it impacted the whole history of art, but it's not an answer.
'Do you sometimes dream about strange things?' Steve asks finally, glancing at Thor who is still staring at the painting.
'Do you mean this is naught but a dream?'
'This is – an artist's way at freeing themselves from the reality.'
'We all need that at times,' Thor agrees, moving away. Steve knows. He could stare at the canvas forever.