Carol learned a hard lesson the day she forgot the word berry when googling blueberry waffle recipes.

The most important lesson I learned from watching The Muppet Show is when cooking meth always test your product on the drummer of the band

Well, well, well... If it isn't the lesson I should've learned by now.

Lesson learned: toddlers don't understand sarcasm. As a side note, don't say 'bite me' around toddlers that don't understand sarcasm