A giant grin, accompanied by a slight chuckle, had been the grand finale to any of his most successful jokes, while the less impressive resulted in a raise of both his brows, which he followed with a semi-satisfied smirk. The least entertaining attempt at humor would get a shrug and a short grimace that reflected he too understood he’d just bombed. Olivia was acquainted with them all now, considering all the time they’d spent together, the most she’d spent with any other individual inside the vault. Olivia had become accustomed to his infectious humor, though it hadn’t always been so. Especially, when they’d first met.