i knew we'd have to pull off at the next rest stop, because shauna had been blowing off a log for the last five miles and i had to roll down the window
"the nasty farts you rip when you've gotta take a dump
"i knew we'd have to pull off at the next rest stop, because shauna had been blowing off a log for the last five miles and i had to roll down the window" What is the definition of "blowing off a log"?