Penis suddenly bigger

[PaleBoy]

So, i am 18 and i thought i was already at the end of my growth.
Today, however, i just got a bit horny (after a few days of being too busy to think about it) and i just noticed that my penis is considerably longer and slightly thicker than i remembered. Now it looks like it´s about 18-19 cm long, while i used to think it was mostly 17 cm long.

How is this possible?

[SethfromMI]

well it didn't grow a cm or two in one night. but it is possible to still grow after age 18

[Zachary G]

from what i understand, we dont really stop growing until we are in our 20s, so there is still room for you to grow some more.

[jayjay111]

If you are uncut, and the head is starting to poke out of the foreskin, you can be sure that your penis is getting bigger.

[Uranus]

The shortest answer is....puberty!

Although if it's a one time thing, it could be That night you were just really damn horny, which can cause your erection to be slightly larger than normal

[Canadian Dream]

It might happen sometimes after puberty that your penis grows a little more, but it's very rare from what I know.