UDHD

Stands for "unending dick hardening disorder"
It usually happens right after RDH or RDHD, a.k.a Random Dick Hardening Disorder.

Caused when foot fungus lettuce from Burger King is consumed.
Don't make fun of it, it will only get worse.

Xavier: "I have UDHD that Aloonoon gave me"
Kaval has a severe case of RDHD, that cannot be cured.
Logan Paul tried to cure himself of random dick hardening, but found no cure.