All tagged laughter

In which we explore the relationship between tickling and fighting, hang out with some monkeys and an invisible gorilla, develop a theory of why people feel competitive urges during yoga, and end up talking way more about sex than I'd originally intended. 

In which we look at the psychological and neuroscientific background of laughter; combine an interrobang with a colon; imagine ourselves as aliens; take the piss out of Elizabeth Barnett; and employ a series of parentheses, brackets, and braces that probably only I find hilarious.