"Lower Body Tragedy"; A woman with an attractive face and average if not fit upper body... sub-torso, however is a compilation of thunder thighs, cellulite and overall abundance.
"Lisa is so hot!"
"Not anymore my friend, since gaining the freshman 15 she's just another LBT "
Acronym for Last BoostedToot. When posting on the Fediverse / Mastodon, LBT means you're referring to the last post that you boosted (shared, reposted).