I do lots of things that, for some reason, adults don't seem to bother with anymore, like board games, bowling and hosting costume parties. It's never a bad idea to dress up silly with your friends and laugh with each other about it. I took up snowboarding this year as a means of finding something to enjoy about winter; it's working. While thrifting recently, I found an old murder mystery dinner game and I intend to play the hell out of it — friends, characters, costumes and all.
I get down with karaoke more than I probably should. Let's pick each other's songs, or find a duet to fail to do justice.
Everything can be funny.
I'm not treating this with any sense of urgency — more of an "If we have a lot in common, awesome, let's chat/hang and see where things go," than an "I'm lonely and looking for someone to complete me." I'm quite happy on my own, but I'm open to meeting someone awesome and opting to be awesome together.
I'm also down with polyamory and ethical non-monogamy. Your partner's feelings are important to me, too.