I do lots of things that, for some reason, adults don't seem to bother with anymore, like hosting games nights and 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 last year as a means of finding something to enjoy about winter; it worked. While thrifting recently, I found an old murder mystery dinner game and I intend to play the fuck out of it — friends, characters, costumes, shittily-executed accents, etc.
I used to get down with karaoke more than I probably should, but that's taken a back seat lately to more physical activities like rock climbing and trampoline dodgeball. Nevertheless, let's go out and pick each other's songs, or find a duet to fail to do justice.
I don't believe in "guilty pleasures". If it gives you pleasure and makes you happy, I see no good reason to issue guilt. As long as you're not preventing others from attaining happiness or avoiding suffering in the process, go ahead and get weird.
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, or surrounded by people that I love, but am nevertheless open to meeting awesome new people and opting to be individually awesome together.
I'm also down with polyamory and ethical non-monogamy. If you already have a partner, their input and feelings are important to me, too.