As I chew the inside of my cheek to a bloody raw mess and tell myself that I am 46 and too mature to laugh at such jokes, I curse you and I bless you at the same time. You're a sick twisted bastard and that's why I like you so much.
As I see it, you're never too old old mature to have a good laugh... as in laughter is the best medicine and it sure beats being straight-faced...like ya got a stick up yer butt.
As for being a sick, twisted bastard, well yeah, it's what makes me so lovable. 
Now I am going to step outside and have a cigarette and laugh my ass off so I don't have to explain any of this to my wife should she look over and see tears rolling down my face.
Yup, it's a bit hard to convince somebody they're tears of sorrow or pain when you have a smirk on your face.... and every so often erupt into fits of the giggles as well.
I think I've seen that red ring before...
Same here...
... but the red ring on your blow-up doll looks a bit different to the red ring on my blow-up doll.
Damn. I'll never make it to the backdoor...bastard!
No, it wouldn't be the easiest thing, crawling on the floor like that... and not knowing the direction of the back door because the tears of laughter have temporarily blinded you.
Yup, a good belly laugh does it to me every the time. 