too superstitious by half

used to emphasize something considered bad.

"the idea seems too superstitious by half"

Half-on

When a mans dick gets bigger but not hard enough yet to not be bendable either with starting to get a boner or starting to go down.

Damn that guy has a huge dick

Nah he just has a half-on

half contender

Someone who isn’t fully participating in events. Can also be stretched as an insult.

Yoo chad didn’t finish the breweys last night, what a half contender

half-stepaunt

Stepparent's half-sister.

half-stepaunt.

Two and a half

2.5

Someone: How many?
Me: Two and a half.

Two and a half

Having sex with 3 girls but only getting done with two of them

Yesterday I got two and a half with these girls from Ambridge

half-co-pibling-in-law

Spouse's half-pibling's spouse.

half-co-pibling-in-law.