male speedos (ie: brief/undies style swimmers).

Australian slang term for men's tight-fitting Speedo-style swimwear. The 'lump in the front' apparently resembles a budgie when it is stuffed down the front of someone's shorts. Ah, those crazy Aussies!!

Any item of male bathing costume or underwear that encloses the wearer's genitalia in a manner that resembles the concealment of a budgerigar.

Australian slang term used to describe a tight-fitting, briefs style swimsuit that accents the genital region. The name most likely comes from the fact that it looks like you are "smuggling" budgies in the front of your swimsuit, due to your dong n' scrote.

men in speedos

a tight pair of pants, swimming shorts, or any type of mens underwear. usually outlining his genitals.

small or tight fitting swimwear (occasionally underwear) worn by men in order to/have the disadvantage of drawing attention to his genitals.

Originally Australian Terminology
Often used as a derogatory comment.