The love between McPoyle and sister is strong. Nothing can break the bond of love that McPoyle and sister share. McPoyle and his beloved sister have a special connection that can't be replicated. The attachment between McPoyle and sister is unparalleled. McPoyle and his sister have an inexplicable connection that goes beyond words. The endearment that McPoyle has for his sister is immeasurable. McPoyle holds his sister dear to his heart with an undying love. The bond between McPoyle and sister is invincible. McPoyle and sister are inseparable by a unique attachment. The unique relationship between McPoyle and his sister is incomparable.

List of It's Always Sunny in Philadelphia characters Wikipedia