thin gay line

The midpoint line on the Tate scale which separates flirting with homosexuality from actual, gay sexual contact.

The Tate Scale, named after Internet celebrity Andrew Tate, is a logarithmic scale from 0-1 which measures the gradient of homosexuality in a person or activity.

Any measurement on the Tate Scale approaching 0.5 is, definitionally, the Thin Gay Line.

"My friend wanted me to go rollerblading with him on the beach, but that's just too close to the thin gay line for me."