Judging by what speed is wearing, we can confidently say that speeds wearing are unisex size M or L Nintendo pajama pants looking online you can determine that pants like that are usually have a inside leg size of 29 (M) or 30 (L).
looking at photo 4th you can see that the bit speed showed was around 6.5 x the size of his penis, so his soft/semi-hard penis size is: 29 / 6.5 = 4.4 inches 4.4 += 0.5 inches for lost dick size under pajamas 4.9 inches soft/semi ~ hard
to determine his hard/max size, i found a quote on a medical artical about penis sizes and the diffrence between growers and showers: "The propensity for a penis to grow is directly proportional to how far you can pull it away from the body (i.e. how stretchable the collagen fibers are within the skin of the penis). Growers tend to have a significant increase — approximately 50 percent — stretched. Showers will hardly stretch at all."
with this, we can calculate that: 4.9 inches * 1.5 = ~7.35inches (if speed is a grower) ~5.1 to 5.4 inches (if speeds a shower)
