If we assume that Bigfoot is a large, ape-like creature, we can make an educated guess about its physical characteristics based on comparisons with other primates. However, please note that this is purely speculative and not grounded in scientific fact.

In primates, penis size tends to vary with body size. Generally, larger primates tend to have larger penises. For example, the gorilla, which is one of the largest primates, has a relatively large penis compared to its body size.

If we assume that Bigfoot is similar in size to a large gorilla or an orangutan, we could estimate its penis size based on scaling up from these animals. However, it's essential to remember that this is a highly speculative and uncertain calculation.

Gorillas have a penis length of around 3-4 inches (7-10 cm), while orangutans have a slightly longer penis, around 4-5 inches (10-13 cm). If we scale up these sizes to account for Bigfoot's hypothetical larger body size (often reported to be around 6-10 feet tall and weighing several hundred pounds), its penis might be significantly larger.

Some speculative estimates suggest that Bigfoot's penis could be anywhere from 6-12 inches (15-30 cm) or more in length, although these estimates are entirely unfounded and not supported by any scientific evidence. Again, please note that this is purely hypothetical and not meant to be taken seriously.