The said man is so drunk from a night of boozing (see "whiskeydick"), his attempt to penetrate the girl is thwarted by his two-thirds erect penis. Full erection is impossible to obtain, so usually the man grabs his dick and tries to force it in, with no avail. The rigidity of the dick resembles that of a thawed hotdog, and full penetration never occurs due to the lackluster hardness, leaving the man and woman frustrated.
Curran: "Dude, I was. I couldn't actually do it, I just hotdogged her for about twenty minutes and then gave up."
Ben: "Man, I'm sorry I hate when that happens."
2. Ratsnake: "C'mon, get it in there, what the fuck are you doing?!"
Chris: "I'm trying just hold on"
Ratsnake: "Are you hotdogging right now?! You've got to be fucking kidding me!"
Chris: "Fuck this, I'm going to bed."
The pseudo-sexual act of placing the penis between the butt cheeks. The Penis being the "Hotdog" and the butt cheeks being the "Bun". There is no intercourse, and usually no ejaculation. This is mainly a comical practice, and usually enjoyed by the giver more than the reciever.