On the downside, they often cause erections to be very noticeable. An erection while wearing boxers can turn out very messy, as the soft fabric can stimulate the head of the penis when rubbed against it.
He unbuttoned his jeans, allowing the bulge some room to grow, but it still rubbed against the material. He let out a small moan as he shivered from the sensation of his erect member. He pushed down on his penis, trying to keep it under control, but he just stimulated the head more, causing it to brush across the boxers' leg.
He couldn't hold in his pleasure as his cock let loose a hot load of sperm. The white stream of jizz seeped through the boxers, causing a dark stain to appear on his crotch. He accidentally let go of his jeans as they fell to the floor, making his soaked boxers visible to the whole class.
The other students burst into laughter as they saw a thick river of semen slowly drip down his leg. He slumped down into his seat, his face completely red. As he moved his hands off his crotch to cover his face, his still erect member broke free of its restraints, the boxer shorts dropping down to Tyler's knees as his rod slowly shrank back down into its natural flaccid state.