You don't have to be smart or horny to find this funny, but it helps.
This short film from director Devon Avery is an Official Selection for the Sploid Short Film Festival, which is still accepting submissions through October 31st. It combines two of my favorite things: love and the paradoxes of time travel. I don't really want to say anything else, though, because it's short and I don't want to spoil anything.
Look, just watch it and laugh.