Translation guide
Cowper's fluid, also known as pre-ejaculate, is a clear, lubricating fluid produced by the bulbourethral glands. In Japanese, it is most commonly referred to by the medical term 尿道球腺液 (にょうどうきゅうせんえき) or the more colloquial カウパー腺液 (カウパーせんえき).
The formal, scientific term for the fluid produced by the bulbourethral glands.
Informal ways to refer to pre-ejaculate in everyday conversation.
Medical terms like 尿道球腺液 are appropriate in clinical or educational settings. Slang terms like 我慢汁 are very informal and should only be used among close friends or in adult content. Using slang in a formal context would be inappropriate.
This is the standard medical term. It directly translates to 'bulbourethral gland fluid'.
尿道球腺液は、射精前に分泌される透明な液体です。
Cowper's fluid is a clear liquid secreted before ejaculation.
A common alternative using the English name 'Cowper' in katakana. Widely understood in medical and educational contexts.
カウパー腺液には精子が含まれることがあります。
Cowper's fluid can sometimes contain sperm.
Literally 'patience juice', this is the most common slang term for pre-ejaculate. It implies the fluid that comes out when one is holding back ejaculation.
興奮すると我慢汁が出る。
When I get excited, pre-cum comes out.
Literally 'running ahead juice', another slang term emphasizing the fluid that appears before ejaculation.
先走り汁で下着が濡れた。
My underwear got wet with pre-cum.
A shortened form of 先走り汁, used in very casual contexts.
先走りがすごい。
There's a lot of pre-cum.