The Lyons Share

I found this today in an arable field. It's a cup fungi, a Peziza sp. I think but I'm not sure which species or even if that is the correct genus. I thought it looked pretty strange, reminded me of something from Trapdoor. It definitely looks like it's burping. If anyone has any experience with Pezizas or think they can ID this, please get in touch.  More typical ones looked like the specimen below. BURRRRRPPP!!!