When Matt Shade & Angie are talking about Jules' friend Liam they say that he's 14 years old. However this episode originally aired in June 2016 and when Shade is looking at Liams' Facebook page it reads that his birthday is in 2000. This would make him minimum 15 years old, possibly 16.
When Angie and Shade are looking at Sarah Marsonet's social media, her birthday (12/11/1984) is the same as Liam's but the year is different. Her sign is the same as Liam's (Libra), even though Libras aren't born in December.