It was Christmas Eve and Mrs Santa was in a terrible state.
"We have a serious blockage!" she cried. "I don't know what to do. The labyrinthine drainage system of this place is a nightmare."
"Don't worry," Santa told her. "I know just the man for the job. Rudolf Lenin will have it sorted out in no time."
"You know I hate that Commie bastard," his wife protested.
Santa sighed patiently. "You may not like his politics. But Rudolf the red knows drains, dear."
Sounds like that old one about "my green hairy lip squid"