Countdown co-presenter Rachel Riley was left embarrassed on a recent episode of the show when contestants offered up a rather rude eight-letter word as their answer to the word game. Host Nick Hewer faced a conundrum of his own as he tried, and failed, to stifle his giggles as a blushing Ms Riley spelt out the word 'erection'. Hewer, who first found fame as Lord Sugar’s sidekick in The Apprentice, was clearly trying not to laugh when Dubliner Gerry Tynan and Anne Lewin, from Brighton, both offered up the double entendre. Scroll down for video . Countdown co-presenter Rachel Riley looked embarassed when the two contestants  came up with the same eight-letter double entendre in the word game (pictured) as host Nick Hewer failed to stifle his laughter . Fortunately celebrity guest Dr Phil Hammond, who was in dictionary corner with Susie Dent, saved the day with nine letter word 'recondite'. It is not the first time the show's host has struggled to contain himself when a rude word has popped up - last year Hairy Biker Dave Myers offered up the seven-letter word 'todgers', causing much hilarity among the hosts. In February an English teacher shocked viewers when submitting the word 'm*nges', an expletive sometimes used to describe female genitalia. It is not the first time Nick Hewer (pictured) has struggled to contain himself when a rude word has popped up . In 1991, two contestants offered 'w***ers', and in 2010 another suggested 's**tface'. In 2010 the presenters looked uneasy when the letters U, D, F, C, K and E all came up in a selection - but luckily the contestants resisted the temptation to go for the obvious and instead submitted the five letter words 'caged' and 'faced'. It's not the first word to have left Rachel Riley blushing. The former Strictly Come Dancing star found herself stifling laughter after drawing the words 'p*ss' and 'a*se' shortly after replacing Carol Vorderman in 2009. During her 26-year stint, Ms Vorderman was left red-faced more than a few times. Words such as fart, porn and poo were among the collection of letters which had the Loose Women star and her co-hosts laughing. The Channel 4 afternoon show, which has been running since the station launched in 1982, recently picked up a Guinness world record when it reached its 6,000th episode. The words and number contest was launched with late presenter Richard Whiteley at the helm and has also been fronted by Des Lynam and Jeff Stelling. Countdown is on weekdays at 2.10pm on Channel 4. Hairy Biker Dave Myers offered up the seven-letter word 'todgers', causing much hilarity among the hosts . When she was a presenter on the show Carol Vorderman was left red-faced when certain words popped up .
Two contestants on Countdown came up with the same word during game .
Co-presenter Rachel Riley looked embarrassed as she spelt out 'erection'
Host Nick Hewer failed to stifle his laughter during the awkward moment .