Despite your best efforts.

You pick up the pace as much as your unskilled and restricted form could handle, at first going up and down faster, then pulling off enough to lick around the tip. Still no effect, as the clerk happily chats away and rings up the sale above you. They even surprise you by suddenly cumming down your throat, making you swallow soo much warm goo just before they pull out.

You are out of breath, so turned on and a bit cum drunk on the surprise load, so it’s hard for you to focus as the clerk kneels and grabs your chin. “Looks like this sissy is a big ole brat, that or an exibitionist hoping everyone sees how big of a sissy slut they are.” She slaps you playfully then hard, causing horny whimpers to leak out with the cum around your lips. “Which is it sissy?”