Thubby
A chubby thot
Boy 1: "That girl over there is slutty but shes fat!"
Boy 2: "yeah she's a thubby"
Boy 2: "yeah she's a thubby"
Thubby
(adj. english, unisex) leaning on the thick fence, not quite in the field of chubby
They were thick in college and have since put on weight, but not enough to be considered chubby, they're thubby.
Thubby
A thicc teletubby
Man did you see that extra fine thubby over there? Damn!