20 footer 

When a girl looks smoking hot from far(20 feet or more)... but when you approach her she's actually hideous.

The 20 Footer-
Good from far... but far from good.

20 footer by NZizzle February 26, 2009

20 footer 

When a girl looks good from 20 feet away, but when you get close to her shes not.

Guy: Yo man check that bitch up there she looks hot.

..a few seconds later..

Other Guy: Ahhh fuck no dude she aint hot.

Guy: Bitch was a 20 footer dawg.

Other Guy: Yeaa wooordd.

20 footer by Chase P August 17, 2006