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4.
A large gun used in WWI by the Germans produced by Krupp Industries.

Big Bertha is usually confused with the Paris gun and was never actually fired at Paris.

In fact, Big Bertha saw very little action aside from bombarding a handfull of Forts in Belgium, most French soldiers who were captured from bombarded forts claimed

"No one can stand up to Big Bertha's might" when in fact they had never been shelled by Big Bertha at all.
Dood! Big Bertha gunna mow down Paris again.

You're an idiot, Big Bertha never even shelled Paris you dolt.
by CommandoDude March 23, 2008
 
1.
The fattest female teacher in every school who makes class entertaining by her comedic weight, but whom is completely unaware of the numerous jokes which occur reguarding her gargantuan size each lesson.

May also be a Bulgarian shot putter.
For example, in mathematics:
*Hannah calls Big Berta for help on a question*
Big Bertha then bends over to help Hannah with her problem. Upon noticing this, Jack calls to Boris and says "Boris, Hannah wants you," causing the unsuspecting Boris to look in the direction of Big Bertha's arse in its entirety. This is then rounded off with the majority of the class shouting "Whaaaaaay!" accompanied with many "wanker" hand gestures, leaving Boris feeling extremely stupid and traumatised by his experience.
by The Prophet Muhammad's mum November 28, 2009
 
2.
A prototype artillery piece used by the Germans in World War I to bombard Paris. Fired the largest shell in the world at the time, and more importantly had the longest range.
Bombs fell on Gay Paree
by Student-Athlete April 21, 2005
 
3.
giant ram truck made in the 70's. illest mode of transportation, from point A, to point B.
bitty #1: "yo we rollin in big bertha tonight!"
bitty #2: "hell yess suckah!"
bitty #3: "rosa parks big bertha bizznach!"
by yeeeahbuddeh October 24, 2011
 
5.
A massive doobie.
look at that massive doobie, its a big bertha
by smokeweedallday92 September 28, 2009
 
6.
a chubby or fat girl (chick)...with big watery tits...
person 1: who is that?
person2: That's big bertha...
person3: NICEEEE!!!
by blthrskt November 04, 2008
 
7.
A very large, nice booty.
Dammnnn look at her Big Bertha!!!
by The 'Circle' December 05, 2011