1. Have sex with a girl on her period
2. Cum inside
3. Give her a strong hug and shake her up
4. Get a straw, stick it in her, and suck up your "Strawberry Shake"
A strawberry shake is not something you want from Steak n' Shake, but it is the special this month.
Having sexual intercourse while a girl is on her period
"Jamie I'm on my period"
"It dont matter to me baby lets just do da damn thang"
Have sex with your girl on her period.
Pull out and have her suck your bloody cock while you blow your load into her mouth.
That's a Strawberry Milkshake.
If you're lucky, she'll even have a strawberry milkshake-moustache!
"What'd you do this weekend?"
'Oh, the ex came over and I made her some strawberry shakes. ;) '
When you feel accomplished, proud, sneeky, or just when you feel good!
"Oh i just got back from a date with Military Man, Strawberry shake!"