Fujiko using her bikini top to zipline down to a boat in the first episode.
Fujiko's ridiculous orgasm noises while having sex with Zenigata at the start of episode 4. Also Oscar chewing out some policemen for listening in outside the door.
Zenigata firing at Lupin in episode 4. Blood goes squirting out of Lupin's chest, only for our loveable larcenist to turn around and start spraying Zenigata with fake blood from a pump inside his shirt. Oscar then comes up through a trap door, which hits Zenigata in the face, knocking him out. Oscar turns around to see the man he loves lying on the ground, covered in blood. He then picks him up and does a Skyward Scream.