a der - a fancy way of saying you're giving head, like you're too go

a fancy way of saying you're giving head, like you're too good to say the real word

"I'm going to go give my mom a der.", like she's not going to ask why you're smelly.

"He said he'd do a der in exchange for a pizza.", the pizza was just a cover.

"I did a der so I wouldn't have to talk to her.", and it worked, because now she's crying.