He'd show Sam.
Hot water was already easing the congestion in his chest.
Shower steam fogged his vision, suddenly lightheaded…too warm…dizzy…
Sam busted the bathroom door open to find Dean pushing himself off the tub floor, shaking his head to clear it, rubbing his bruised shoulder. The shower wall was sporting a fresh crack.
"This is 'it's allergies, not the flu'?" Dean blinked fuzzily up at him.
"They're gonna need to replace the tile. Fugly color anyway."
"Dude, you splintered ceramic because you passed out in the shower and you care about redecorating?"
"Maybe repaint…nice shade of green…"
A/N: This one was based on experience XD I actually did this in my teens.