That look of Hisa's when she's calculating, I never thought I'd see it when she was subjecting someone to sodomy.
Sodomy is the act of anal sex (can also be used to refer oral sex), this is showing vaginal object insertion, so it does not apply here.
"T-the tacos, they're hot! W-why are you doing this?""For the sake of entering the national tournament, you have to bear it!""That's right. You're invincible as long as the effects of a taco remain. Thus, if we keep supplying you with tacos through your lower orifice, you should be permanently unbeatable!""Well, and partly because we're just curious too.""Th-that's silly... C-c'mon, just pull them out of there, please...""Really? Despite what you say, your little anus is puckering up quite readily...""Pres. Why don't we put one in there as well! That should give us three times the power!!"Gundam joke?