Messing With My Baby Sister

In the living room, after dinner:

Ben: *loud fart*
Sis: ...
Ben: You didn't hear anything!

(...)

Sis: *sniff* *sniff*
Ben: You didn't smell anything either!
Sis: Can't believe I'm related to you.

Come on, we all love messing around with our younger siblings right? Or at least miss doing it :)