TPWKY episodes are great. TPWKY crossover episodes with In Defense of Plants are even better, because plants will kill you cleverly and insidiously. TPWKY crossover episodes with In Defense of Plants about my favorite socially-acceptable intoxicant are the BEST.(If you've never thought of caffeine as an intoxicant, you're not drinking enough coffee.)Want to know how plants defending themselves from insects led to the rise of the world's favorite adenosine antagonist via Middle Eastern goatherds, angry monks, a Chinese emperor, and long-lost Central American civilizations? Of course you do. Check this episode out!