She's talking about his penis.



Transcript:

Mass Effect Comic 'Paramour'



Panel 1

Kelly: We beat the collectors, commander! Isn't it great?

Shepard: Hmm? ...yeah

Kelly: Aww, Why the long face? You're not still pining for Tali, are you?



Panel 2

Shepard: It's just... we're already different species. Why does it matter that I'm a girl?

Kelly: I'm sure you'll find someone, commander. What about Garrus? He seems nice.

Shepard: Already been there. We're completely incompatible



Panel 3

Kelly: Oh come on, you two get along great

Shepard: It's like a claw hammer

