As the word "tits" is more general, the word "tots" references the small size of a female's breasts.
"I don't care for the big ones...I just like a pair of tiny tots."
Bill: Hey man how was the weekedn?
Greg: Awww. It was cool. Tons of vag in LV.
Bill: nfw. you hit that shit
Greg: yea, two shits at the same time
Bill: where they hurt?
Bill: comon man. i'm sitting next to the gf. can't call. you gotta tell me.
Greg: fu tot
*Note that the definition for twat is used as whore
A TOT is a any table filled with whores. Usually as soon as one twat sits at a table, the TOT soon starts to build and quickly multiply.
2 Minutes Later
Same guy: Holy crap, that TOT has over 10 people
Another 2 Minutes Later
Same Guy: What the f**k, that TOT completely multiplied by 300%