When you love someone so much, or are so obsessed with them, that you want to connect a tube from both of your genitals, with which to become pregnant.
A male engaging in anal sex with another man. The "tube" is derived from the large amount of lube necessary to enter the anal cavity. Twisting a tube means literally twisting a tube of lube so that you get every last bit of lubrication out of it, those last few drops.
Yeah, I saw Jim leave with that guy.. whatever though, they're probably heading back to his apartment to twist a tube up.
Blowin a tube is like when you have a lot of milk or ice cream and you’re lactose intolerant and you run to the bathroom and blow the tube clean out. Your tummy can’t handle it, and you blow a tube.
Hey Tony, I had way too much mozzarella last night and was really blowin’ a tube. I had some explosive diarrhea!