what does gooning even mean

Ik it means masturbating but I swear some of y'all don't actually mean it, had a friend who wrote a fanfic w some smut saying she gooned the whole time whilst reading it and had to clarify with her I wasn't reading her masturbation material and that she just jokingly used it as a replacement for 'lusting' ???? like I need clarification gang I can't go on my socials and see my irls using the word 'goon' that's just weird, or am i being weird?????