When do boys start to LIKE being clean?

[[M]umma[M]ia]

my brothers were like this... also until they got a girlfriend. I think it helped when i told him he stunk like every day lol.. but i was a mean sister.

[Schmickers]

... I was like this. Then I got a girlfriend, and equated being clean with making out.

I soon started paying attention to my appearance...

I would think for a 12 year old boy, threatening to jump in the shower with him if he comes out and isn't spotless might be a sufficient deterrent. I know I would have been mortified at that age.