Please do not spit(e) here

I noticed this on Rohini West Metro station. I know photography is not allowed inside Delhi Metro but I couldn't resist myself from clicking this picture.

The dictionary meaning of spite is given below.

–noun
1. a malicious, usually petty, desire to harm, annoy, frustrate, or humiliate another person; bitter ill will; malice.
2. a particular instance of such an attitude or action; grudge.
3. Obsolete. something that causes vexation; annoyance.
–verb (used with object)
4. to treat with spite or malice.
5. to annoy or thwart, out of spite.
6. to fill with spite; vex; offend.