So many good ones, Especially from the Citadel DLC. One that comes to mind is: “Shepard has a clone. Makes sense when you think about it.” - Wrex. Makes me lol.

Mine is a banter between Tali and Garrus can’t recall it but it is along the kines of something with immune systems and Tali threatens with her shotgun

"Mordin wasn't my only source in STG. Or did you think I was as dumb as my brother, Wreav? What have you done?"

@KristianwithK damn I definitely need to play the Citadel DLC because I haven't played it.

@Lethal blade00 yes that made me laugh when Tali threatens Garrus with her shotgun. And to think that they make out in Mass Effect 3, only if you're not romancing Tali.