In Great Britain, people always eat pancakes on Shrove Tuesday (the day before the beginning of Lent and Ash Wednesday - similar to Carnival in Catholic countries) and it's often called Pancake Day. It grew out of a need to use up butter, eggs, fat, and sugar before Lenten fasting began. Nowadays, pretty much everyone over there does it regardless of whether they are Church of England or not.
My dad is English and moved here 24 years ago when he married my mom, so we always celebrate this day by making "English" pancakes which are thin like crepes. Traditionally, they are eaten with lemon juice drizzled over the top and sugar (granulated or powder, depending on preference) sprinkled on top of that. You then roll up the pancake, sugar and all, into a tube and eat it.
Here is a pancake recipe similar to the one my family uses. Enjoy!