Having sexual intercourse or engaging in a caressing manner with a hesh person. It is a severely scary and harsh disease that is only now augmenting. Common HeshTD's are coffin dick/vagina, turtle dick and taco dick. Scientists are only now discovering more extreme variations of HeshTD's.
Adam: Yo man I had sex with melissa at the party last night!
Kevin: Dude she has HeshTD's!! Your gonna die from coffin dick!
Adam: No my dick is gonna fall off or worse!!!