Gabriel plays "Human Hangman". He must guess a latter and is that letter is not included within the phrase Callum has chosen, then a part of his body will be tied up. If he gets all 7 straps fastened he will be pied & gunged whilst tied up and then sent to The Gunge Tank after. If he works out the praise, Callum will be sent to the gunge tank. However, we all know Callum is very challenging and doesn't like losing so, as ever, anything could happen...