Final answer:
The riddle refers to the letter 'E', which is at the beginning of 'eating', the end of 'time', the beginning of 'every', and the end of 'bite'.
Step-by-step explanation:
The question presents a riddle that plays with the letter 'E'. The answer lies in identifying this common factor. Let's break down the riddle:
- What’s at the beginning of eating the batman calzony? The letter 'E' is at the beginning of the word 'eating'.
- The end of dinner time? The letter 'E' is at the end of the word 'time'.
- The beginning of every batman movie? The letter 'E' is at the beginning of the word 'every'.
- The end of the last bite? The letter 'E' is at the end of the word 'bite'.
The common element in all parts of the riddle is the letter 'E'. Hence, the answer to the riddle is the letter 'E' itself.