When you hear the word Colin...

[PastMyBestBeforeDate]

Does it mean anything other than a name?
DH has asked. He had a friend years ago who used it to mean an erection. I have never heard this.
Was it just his friend's made up 'thing' or was it actually a use of the name?
DH is not called Colin and they didn't know a Colin.

An image of a slightly nerdy man with slicked down dark hair immediately came into my head when I saw the name Colin😳

Very much sounds like something your friend made up. A friend of mine used to use 'Terry' and 'Big Terry' for this and it was definitely made up!