Syphilis

A wooden statue of a siphilis sufferer; woodwork from the 16th century

That's what a culture of the bacteria that cause syphilis look like

Syphilis is a disease. It is one of the sexually transmitted diseases. This means it can be spread by having sex. Condoms can prevent it from spreading.

The disease is caused by a bacterium, called Treponema pallidum. Most transmissions occur through the sexual route. Very rarely, it can also be spread by direct contact, or from the mother to the child.

Since it is caused by a bacterium, the disease can be treated (and cured) by antibiotics, especially by penicillin.

A cleaner way of saying is that its a party crasher