35 episodes later...
"Aha! I'll give that miserably unmiserable monkey the Four Star Ashtray Dragonball. A Saiyan's lungs are surely susceptible to cigarette addiction. Yes... The perfect plan!" Frieza said COPDly.
Frieza stepped outside his ship. He was already in Goku's front lawn, despite the retraining orders.
"MONKEY! I have something for you!"
Goku walked through his front door, smashing it. "What? You're not allowed within 500 yards. Also we prefer to be called Saiyans."
"I gift you your grandfather's Ashtray Dragonball, the 4 Star!" Frieza said.
Goku gasped, "Grandpa! Wait... How did you know this?"
Frieza replied, "Are you taking it or not?"
Goku was already smoking.
But it was a trap. Frieza coated the outer layer of the ashtray with asbestos in an effort to give Goku mesothelioma.
"HAHAHAHAH MISERABLE MONKEY! You now have enough asbestos in your lungs to give you mesothelioma in only a matter of WEEKS!" Frieza squealed diabolically. "And the Namekian Dragonballs are ashtrays!"
"What about Earth's Dragonballs?" Goku's plot armor replied.
"I made Shenron turn them into asbestos and coated your 4 Star. Yeah that's right monkey, that Ashtray isn't even the Earth 4 Star. Your grandpa is in your lungs!" Frieza cackled.
"Noooooooooooooooo!" Goku screamed.
Goku has mesothelioma.