Never mind not cracking a smile and effectively stepping over her, surely the initial gut reaction would be to bend a knee and see if the person sprawled in front of your feet is OK. No? That'd be a resounding negatory. 

Here is a close up of Kim and Kanye's reaction to the comedienne falling at their feet. 

And here are several twit pics of the same stoic non-reaction...

In case their reaction isn't clear, here's a handy run down from a witness speaking to Us Weekly: "They were very serious. Kim smiled a little. Kanye, did not." For those admiring Kim's dress, it's Sophie Theallet.

We're grappling for a defence for Kanye (we're fair like that), and maybe he wasn't impressed as there's still some latent anxiety lurking after Kim was rushed by professional crotch hugger Vitalii Sediuk at Paris Fashion Week (about 6 months ago...) It's the only logical explanation for such a face riddled with deadpan disgruntlement. 

Speaking of Amy Schumer, she has appeared alongside Patricia Arquette, Tina Fey and Julia Louis-Dreyfus to "explain misogyny in Hollywood" in the new series of Inside Amy Schumer... Or, "what Kanye was possibly thinking at the time."