A "tightie" is exactly the same as an "lg" but better. It is not a compliment when you are called a tightie. It is meant to be offensive..
These common creatures thrive off older men. They love the dick
"Did you hear Kendal smashed her chin slipping on ice chasing Jeremy? Dude..she's a tightie"
"Did you hear James got seduced by some tightie, poor guy. i cant believe he fell into her trap!!"
"i wanna get laid...LETS GO TIGHTIE HUNTING!"