australian: a woman that has had too much botox or collagen injected into her lips thus giving them the appearance of two slugs mating.
1."looks like old slug lips has overdone the botox again"

2."went to the casino the other night - faaarkin hairy old slug lips everywhere"
by gibbalatte November 1, 2012
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Slug Lips: adjective

a word used to describe the swollen inner lips of a vag after being rammed all night long.
Braden's penis is enormous, we had sex all night. I have slug lips this morning.
by k.s.b February 9, 2008
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Really really wet pussy. Like moist pussy. Like she is so turned on, you better not waste time because she will be angry if you don’t please her when she has slug lips
“Damn bae I just put the tip in and you already got slug lips? Gotta slow down before I put a baby in you”
by Hampton Grey April 21, 2021
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To grow a massive slug across your upper lip (moustache)
Dave decided he looked cool with his new slip slug - he wasn’t
by Crispyduck12 November 19, 2019
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When your inner vaginal fold swell to resemble that of a slug after a yeast infection (thrush).
I think I have thrush, I've got slug lips again.
by Megseggsolotus August 10, 2022
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