20mm 

commonly refered to briscoe trying to boast about his cock size not knowing that he said it wrong.

"Eerrr my dick is 20mm, ah i mean 20 inches, oh shit."

20mm by zieg May 9, 2005

20mm boys acme labs explosive device 

Patented by the meth army to protect children under the mother son protection act in every home in Northern Ontario with uranium in center with 23,000 ft lbs and uranium or trinitite rods.

We got a 20mm boys acme labs explosive device 522 on Guelph terrorist justin trudeau

20mm boys acme labs explosive device by Cody5050 December 21, 2022