Liquid (not blood), that inklings like to use to attack each other until they explode, for no fucking apparent reason. It's also used for writing, but since the rise of the internet, people want to type instead nowadays.
BRO THE INK LOOKS LIKE BLOOD SOMEONE FUCKING CALL THE AMBULANCE
By 8MyLife
When a man ejaculate's into a woman's eyes, then promptly leaves the house while she is temporarily blind.
Duncan completely inked Stacy last night, she was still on her knees when he bolted out of the door.
By bunkybunkster
Ink is the name of a very handsome, funny, talented, and usually gay man.
"Woah, you’re HOT ink!"
By kayden dick