Bob's Bugle / Bob's Birthday

S1, E104: PARP! Whilst Bob is doing plumbing work he discovers some pipes that make a noise like a trumpet. Bob thinks they sound exactly like a trumpet and constructs his bugle. It sounds awful but he insists on practising into the early hours – and noone has the heart to tell Bob how awful his trumpet sounds so they try to hide it without much success. / It’s Bob’s birthday and Wendy has a brilliant idea – everyone has to pretend that they’ve forgotten Bob’s birthday but then surprise him later with a big party. Bob is disappointed when he thinks no-one has remembered his birthday and goes off with Scoop and Lofty. Meanwhile, everyone helps to get the party organised – even Spud helps put the candles on the cake.