Leave it to the Fifth Harmony girls to give their manager Simon Cowell the best birthday present ever — a front yard full of toilet paper and a sign that says he's much older than he actually is! These girls are pretty hilarious and this might be their best prank yet.
The giant sign they hung in Simon's driveway joked that the 54-year-old star is actually 87, and we're not sure how much toilet paper they went through, but it looks like it was totally worth it — we bet he was shocked when he looked outside!
What do you think of Fifth Harmony's prank? Let us know in the comments!