A potent display by Celtic's strikeforce blew Aberdeen away in an afternoon of high drama at Celtic Park.
Anthony Stokes opened the scoring from the penalty spot after Dons captain Paul Hartley saw red for handball.
Gary Hooper grabbed a brace before Celtic's Thomas Rovne also saw red, Stokes then converting another penalty.
Josh Magennis netted an own goal and Hooper claimed his hat-trick before Joe Ledley, a third for Stokes and a Paddy McCourt penalty completed the rout.
The home side started brightly, perhaps boosted by the news that club legend Henrik Larsson was watching from the stands, but could not carve out a clear chance in the opening minutes despite their pressure.
Stokes was the first to have a go at goal, picking up on a pass from Hooper, but his fierce right-footed drive flew over the bar.
Chris Maguire was first to have an effort for the visitors after Darren Mackie won the ball in midfield, but the young striker took too long before shooting allowing Celtic keeper Fraser Forster to narrow the angle and put the ball out for a corner.
Ki Sung-Yeung then fired in a shot from inside the box which Hartley blocked with his arm, referee Alan Muir pointed immediately for the spot and Hartley saw red.
Stokes sent Langfield the wrong way with his spot-kick to open the scoring - his sixth goal of the season.
Almost straight from the kick-off Celtic doubled their lead, Hooper outmuscled Zander Diamond before crashing a shot past Langfield from about 12 yards out.
Aberdeen's afternoon went from bad to worse when Hooper claimed his second of the match, as Diamond deflected Niall McGinn's cross into the path of Hooper who fired home from close range.
Rovne then hauled down Maguire on the edge of the box and referee Muir produced his second red card of the match, deeming the offence a clear goalscoring opportunity.
The half ended on a dramatic note in keeping with the way the game was evolving as Langfield brought down Shaun Maloney inside the six-yard box.
Stokes converted the penalty to double his own personal tally, with Celtic fans left wondering why Langfield was shown a yellow card rather than red.
Stokes and Hooper were causing the Dons defence all sorts of problems, and Hooper was left with the first chance of the second half, but his shot after chesting the ball was turned past the post by Langfield.
Hooper seemed eager to claim a hat-trick, and he flashed a volley just wide of the mark after a cut-back from right-back Cha Du Ri.
However, it was Magennis who scored next, putting his side five goals down as, stretching to head a cross clear, he diverted the ball past Langfield and into the net.
Hooper was not to be denied though, and, shortly after, he peeled off Diamond and flashed a back post header past Langfield.
Ledley then deceived Langfield with a low, driven effort with the visitors in complete disarray.
Almost straight from the restart, Stokes joined Hooper in grabbing a hat-trick, robbing Maguire of the ball before slotting calmly past Langfield.
Maloney was then brought down in the box for a second time for a penalty which this time was converted by substitute McCourt to put Celtic on cloud nine.
Celtic were toying with the visitors, whose confidence had utterly evaporated, leaving a question mark over the future of under-pressure Aberdeen manager Mark McGhee.