Thinking and doing are two very different things, as First Division side Norwich City learned the hard way at the weekend.
It was during their 2-1 win against Burnley that the Canaries' electronic scoreboard momentarily flashed up the scoreline for their East Anglian rivals, Ipswich, as "Manchester United 1 Scum 0".
There have been red faces all round at Carrow Road and hasty apologies have been made, but it is not the first time that employees at football clubs have got a little carried away.
BBC Sport Online looks at other examples of club staff acting before thinking.
McGee's muddle
Reading got themselves in hot water earlier in the year when pre-match announcer Jonathan Richards made comments before a home game against Millwall in January.
Richards went on a rant about Millwall manager Mark McGee, who made an acrimonious exit from Reading in 1994.
The Berkshire club were forced to issue an official apology and their controversial announcer resigned.
Reds rile Romans
Liverpool's announcer George Sephton rubbed salt into Roma's wounds during a Uefa Cup clash at Anfield in February.
Roma officials and Italian journalists were outraged when Sephton played Arrivederci Roma over the tannoy after Liverpool squeezed through to the quarter-finals of the European competition.
Houllier found himself grilled about the incident in the post-match press conference and, embarrassed, had to say: "I don't pick the music."
Welsh woe
Wales manager Mark Hughes was furious with the PA announcer after his side's 0-0 draw in Poland last year.
Hughes felt that the tannoy was (mis)used to goad the local supporters.
The former Manchester United striker was so angry that he demanded the Welsh Football Association lodge an official complaint.
Swindon's PA pundit
Peter Lewis paid the price for his passion during Swindon's match with Bolton Wanderers in 1995.
The announcer decided to pass his own judgement on referee Graham Barber's performance in the red-blooded encounter between the two sides.
Lewis reacted to player-manager Steve MacMahon's red card by screaming: "I've seen some crap refereeing decisions in my time, but that's the worst."
Lewis was sacked.
Bent on victory
It is never easy at the best of times to have a name that can be used against you, as former Bristol City striker Junior Bent found out.
It was during a passionate derby match at Bristol Rovers that the announcer described him as: "Number Eight Junior Bent - and he is."
Unsurprisingly, the Rovers' MC was promptly sacked.