If you don't want to believe in the Real Presence of Jesus (even though He described it to us in John 6), that is your perogative since you have Free Will. However, there is no reason to ridicule those of us who do believe. The only thing you have accomplished is to exhibit what atrocious manners you have. Rude, snide, and mocking comments most often are the reflection of a petty and small-minded boor.
John 6: 63 The Spirit gives life; the flesh counts for nothing. The words I have spoken to you are spirit and they are life.
The Lord is explaining a spiritual reality and not a physical one. His own words say so in the very chapter that you cited, John 6.