Still the best blonde joke to date..

A brunette, a redhead, and a blond escape a burning building by
climbing to the roof. The firemen are on the street below,
holding a blanket for them to jump into.

The firemen yell to the brunette, "Jump! Jump! It's your only
chance to survive!"

The brunette jumps and SWISH! The firemen yank the blanket
away. The brunette slams into the sidewalk like a tomato.

"C'mon! Jump! You gotta jump!' say the firemen to the redhead.

"Oh no! You're gonna pull the blanket away!" says the redhead.

"No! It's brunettes we can't stand! We're OK with redheads!"

"OK" says the redhead, and she jumps. SWISH! The firemen yank the
blanket away, and the lady is flattened on the pavement like a pancake.

Only the blonde remains on top of the building. Again, the
firemen yell "Jump! You have to jump!"

"No way! You're just gonna pull the blanket away!" yelled the blonde.

"No! Really! You have to jump! We won't pull the blanket away!"

"Look," the blonde says, "nothing you say is gonna convince me
that you're not gonna pull the blanket away! So what I want you
to do is put the blanket down, and back away from it..."