gru pins shrek to the wall and they start making out aggressively
' omggg.... gru!! your so good at this~' shrek says gasping for air. 'I TOLD YOU TO CALL ME DADDY ALPHA!' Gru says grabbing shreks waist tightly. 'o-o-o-o-oh sorry daddy alpha..., also i think.. we shouldn't exclude donkey... b-b-be-because, im actually cheating on donkey for you! I-i-i-i im sorry please forgive me i still love d-donkey and i know.. your gonna be angry but i also love you too! and-' shrek is quickley silenced by gru putting his finger up to shreks lips, 'hush kitten, daddy has something he wants to say too...' 'y-y-yes daddy alpha..??'
'i-i like donkey too...' gru says blushing alot. 'o-o-omg r-really so your not m-m-mad daddy alpha?' shrek says relieved and blushing from the sight of gru flexing his cute little skinny long daddy legs, 'oh my little kitty kitten... im not mad at all! But what would make me happy is a little wiff of youe kittiy witty toesie wosies...'
Later in the hanky they hear a light creak coming from the bedroom door, and they spot donkey. Gru and shrek looked at each other in horror as they await what donkey might say. "heh heh heh... dont do the hanky wanky without me.." and then Gru and shrek looked at each other and smirked freakishly. "THREESOME !! >_<" they all squealed.
"OMG DONKEY! YOUR DONKEY DONG IS SO BIG!"
"o my gawd donkey..." "mmgghh donkeyh" gru and shrek said. "we should've invited donkey sooner... i didnt know he was so bad"