My favorite ones are given below... "A smile is the easiest gift to other people" "Alcohol and calculus don’t mix. Never drink and derive." "All men are idiots And I married their king."
I can suggest you a slogan which will be big hit. try this FRIEND means "First Relative In Every New Difficulties" F - First R - Relative I - In E - Every N - New D - Difficulties Cheers!!