Guess time: A capital B can be turned info a capital F by marking over part of it. Then turn “ir” into an “a” with a thick line over it.

My sister has her birthday and Christmas close together, so to show my father what that feels like, I got a fathers day card for him (his birthday is close) and cut it in half in a way you couldn’t tell if it was ‘Fathers’ or ‘Birth’, and gave him half for each.