What makes you laugh ridiculously?

On Fathers' Day this year, my family was eating at my grandparents house. My grandmother was making a crazy cheese sauce to put on broccoli. (Aside: She can make food ex nihlo. She's like McGuyver in the kitchen.) My mom brought her silly, perpetually-a-puppy Yorkshire Terrier, Ringo. Loyal to his character, he was underfoot as food was being prepared and bouncing like a crack head beside my grandmother. Finally, in her adoring but exasperated tone reserved strictly for Ringo, she spouts: "Here, Smarty!" And chucks some cheese at him.

And THAT, my friends, is what makes me laugh inexplicably and ridiculously every time I think about it. (Which is a lot and often at inappropriate times.)

What about you?