Here's one from another forum I am a member of; namely, the AlternityRPG.net forum, in a thread called "The Great Giggler" -- which has functioned just as this thread surely may.
This story is much too long for a simple spoiler; it is called the "Mutant Nazi Attack Squirrel of Death", which can originally be found
here. If that link does not work, I have also copied it as a PDF, for archival purposes, into the "Collected Humor" folder of
my Dropbox account. (Made minor alterations to spelling errors and fixed punctuation; nothing more drastic than this. All credit for the story goes to username Kleczak in the alternityrpg.net forum.)
I promise you, if you should happen to have any sense of humour, and should manage to read this account aloud to family or friends, you will not fail to end up laughing hysterically yourself. If not ... I don't know what to say.
In any case, the Great Giggler thread is the primary source for any humor I may share, henceforth. Within it can be found humor gained from world-wizened veterans. Feel free to browse it and see what tickles your funny-bone....