In all fairness, Mello only really gets this way around Near, because when he's in his presence, Mello tends to feel overshadowed by him, as small and helpless of a child as he was on the day they first met. It's really no wonder he acts like a child around him.

Mello nearly rolls his eyes over the pun, intentional or not, but makes a quick inventory of the skills Near lists, and arrives at an important conclusion: "Nothing combative?" He notices the pattern, because of course he does.