Waiting to be sized

An old woman walks into a drug store and asks the young man behind the counter if they sell extra large condoms. The clerk looks at the woman quizzically, but shrugs and tells her „yes, we do.They’re right here behind the counter.“The old woman thanks the clerk and stands there, and stands there, and stands there.The clerk asks the old woman, „is there something else I can help you with, Ma’am?“.The woman smiles sweetly at the clerk and says „no, thank you, son.I’m just waiting here to see who buys them“.